This section provides an overview for cap nuts as well as their applications and principles. Also, please take a look at the list of 75 cap nut manufacturers and their company rankings.
Table of Contents
A cap nut is a nut that is processed to seal one side of a hexagonal nut so that the tip of the threaded bolt does not show. It is so called because it looks like a cap. It is also often referred to as a "decorative nut," "stop nut," or "bag nut. The standard for the nut portion is the same as the so-called hexagon nut, and it can also be used in combination with a double nut.
They are used for safety and decorative purposes. Mostly made of iron, copper alloy, and stainless steel. Stainless steel is used where rust prevention is required.
The bolt tip does not protrude from the surface, which makes it visually appealing and provides excellent safety. They are also effective in preventing tampering, and because of these features, they are often used in playground equipment in parks. Cap nuts are also frequently used at the ends of anchor bolts on poles and other locations where there is heavy pedestrian traffic and where it is necessary to prevent injury or damage from contact with the bolt.
Cap nuts are generally hexagonal bag nuts. There are three types of cap nuts. The first type has the nut and cap as a single piece with no thread relief groove. The second type has the nut and cap as a single piece with a thread relief groove, and the third type has a cap welded onto the nut. The bolt is not exposed on the surface, which is superior in terms of safety and appearance.
Since the standard for the hexagonal nut portion is the same, it can also be used as a double nut in combination with a regular hexagonal nut. Various sizes are manufactured for metric screws, such as M3, M4, M5, etc., according to the nominal diameter of the screw.
Like bolts, cap nuts are generally made of iron, stainless steel, or plated iron.
Since cap nuts are limited in length to accommodate bolts, it is necessary to consider the length of the bolt to be combined when using cap nuts.
Cap nuts, also called capped nuts, are also further commonly referred to as hexagonal bag nuts.
A typical hex nut has a threaded hole through which an inserted bolt protrudes. Cap nuts, however, have a closed threaded hole on one side. Since one side is closed, the end of the bolt is not exposed, and this is used to improve appearance and safety. In addition, since the screw hole does not penetrate, the end of the bolt or the joint between the cap nuts and the bolt is not exposed to rainwater when used outdoors, so it is sometimes used for rust prevention.
The most commonly used method of closing the screw hole is to attach a metal part of the sphere over the hexagonal nut by welding.
One point to note when using cap nuts are the need to consider the length of the bolt, since one side of the nut portion is blocked.
The cap nuts has a structure that prevents water from penetrating into the inside of the cap nuts (the threaded part) because the threaded hole is not penetrated. Therefore, the threaded part of the joint can be expected to prevent rust. As a result, it is possible to easily the cap nuts even if it has been left in place for a long time when installed in a location that is often exposed to wind and rain.
Although the surface of the cap nuts can be protected from rust by painting or other means, it is difficult to prevent rusting of the threads (joints).
As an actual example, when a propeller fan is installed on the shaft of a fan motor, which is often exposed to wind and rain when installed outdoors, cap nuts are sometimes used as a fixing nut instead of a regular hex nut.
*Including some distributors, etc.
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Suncor Stainless, Inc. is based in Plymouth, Massachusetts. Suncor Stainless serves the industrial, marine, architectural, commercial, government, and OEM markets as a manufacturer of stainless steel hardware and components. Suncor Stainless is ISO 9001:2015 certified. Suncor Stainless’s services include custom stainless steel manufacturing, product testing and quality assurance, strength testing, metal content testing, custom webbing, custom stainless steal chain assemblies, custom threading, machine swaging, corrosion resistance testing, and retail packaging. Suncor Stainless also supplies numerous components such as sheaves, hooks, and clips.
StockCap was founded in 1950 and is headquartered in Arnold, Missouri as a division of Sinclair & Rush, Inc. The company is an ISO 9001:2015 certified custom designer and manufacturer of parts for the automotive, finishing, and HVAC markets. The company produces several types of products including caps, plugs, tapes, and others, using materials such as vinyl, rubber, and plastic. The company’s custom capabilities include plastic injection molding, vinyl dip and rubber molding, extrusions, thermoforming, and finishing operations.
Rainbow Nut and Bolt, Inc. was founded in August 1978 in Santa Ana, California. The company is a distributor of various fastening products including special finishing coating and reworking services. The company sells a complete line of fasteners including nuts, bolts, socket products, anchor products, and screws. The 16 materials available for refinishing include blue zinc, black oxide, and nickel. Reworking services including special cut to length, re-threading, re-tapping, drilling, and bending.
Product Components Corp was founded by Joseph Saks in 1962 and operates out of Martinez, California. Product Components is a supplier of all types of plastic fasteners. Product Components provides custom molded, stamped, and machine stamped fasteners including screws, nuts bolts, knobs, washers, spacers, stand-offs, balls, and rivets among others. Product Components combines a full plastic fastener line including screws and bolts with engineered machined or molded component services for industrial applications for industries such as electronic, automotive, medical, aircraft, and food. Additional products include panel fasteners, spacers, standoffs, dowels, and other components for panel hardware.
PennEngineering was founded in 1942 and is headquartered in Danboro, Pennsylvania. Through its brand, PEM, the company is a manufacturer of fastening tools for industries such as aerospace electronics, automotive electronics, medical, EV, and EV charging. The company has branches across the United States, Europe, and Asia through which it manufactures components in the same regions where they are used. The company has data sheets, CAD downloads, and other tools to assist customers in selecting the correct fasteners for their needs. These fasteners vary by technology, characteristics, and type of material onto which they are applied.
OneMonroe was founded in the 1920s and is located in Rochester Hills, Michigan. OneMonroe is an ISO 9001:2015 and AS9100D certified global industrial manufacturing company serving several types of customers including manufacturers, distributors and catalog-houses across several vertical markets including aerospace/defense, automotive, medical, and transportation. Product lines include adjustable handles, bearings, casters, gaskets, hydraulic clamping, military spec hinges, molded rubber, piano hinges, pins, pull handles, quick release pins, seals, springs, toggle clamps, and various harnesses. Custom manufacturing is also available to meet specific customer needs.
National Bolt & Nut Corporation is based in Schaumburg, Illinois. National Bolt & Nut is a distributor of bolts, nuts, and related tools, serving the heavy equipment & construction, mining, transportation, automotive, and alternative energy industries. National Bolt & Nut is ISO 9001 certified. National Bolt & Nut product listings include standard and custom nuts, spacers, and washers with assorted head styles. Other offerings include a variety of screws, pins, and sprockets.
Kinter (K International, Inc) is a US-based retail display hardware distributor and manufacturer that has been servicing retail businesses since 1980. At its current capacity, the products range from ceiling display systems and sign holders to cables, ladderless sign hanging systems, and fasteners. The option for custom design and manufacture is also available. The company's products are used to display a variety of goods, such as merchandise information, sale signs, and inventory.
J.W. Winco was originally founded as Ganter in 1894 in Germany. Winco specializes in parts manufacturing. Parts offerings the operating parts segment including handles, adjusting, and positioning parts; clamping parts segment featuring tensioning, clamping, switching, and levers; and finally the machine parts segment with indexing, locking, mounting, connecting elements, guides, spindles, rollers, magnets, casters, and wheels. Winco’s complete catalog contains over 75,000 standard parts. Winco is also ISO 9001 certified. Winco offers free CAD downloads and technical documentation for many arts.
G-Fast has its roots back to 1989 and is based in Chicago, Illinois. G-Fast is a distributor and custom manufacturer of machine tools and equipment. Product offerings include bolts, screws, nuts, rivets, washers, pins, springs, wireforms, retaining rings, clamps, clips, pins, handles, electronic access tools, hinges, knobs, latches, panel fasteners, quick release pins, and wire management. Parts are available across several standards and materials. G-Fast’s services include custom specialized bolts, screws, and nuts, contract manufacturing, CNC machining, and cold heading.
FM Stainless was founded in the 1990s and is headquartered in Ellijay, Georgia. The company is a domestic manufacturer and fabricator of stainless steel and high alloy expansion products and other specialty fasteners. The company designs and manufactures fasteners that are specifically tailored to handle customer needs. The company’s product segments include Pipe Supports, Expansion Anchors, Stainless Hardware, and Chain & Wire Rope Products. Many components including those in Stainless Hardware can also be manufactured in titanium, Monel, and other alloys and materials.
Component Hardware Group was established in 1981 and is based in Matawan, New Jersey. Component Hardware Group is a global manufacturer and designer of industrial components and assemblies for industries including food service, health care, construction, commercial services, and institutions. Component Hardware Group offers casting, forging, stamping, fabrication, and other custom sub-assembly solutions for customers globally. Component Hardware Group’s 3 flagship brands are Kell in refrigeration, Flame Gard in grease filters and cooking hood accessories, and Encore in plumbing hardware.
Chicago Nut & Bolt is based in East Dundee, Illinois, and is a manufacturer of standard and custom fastener products for industries such as agriculture equipment, military, marine, railroad, and construction equipment. Chicago Nut & Bolt’s custom services include fastener engineering & prototyping, warehousing, rush work, and custom fasteners and bolts. Examples of custom fasteners and bolts in action are the Las Vegas City Center, Golden Gate Bridge refurbishing, Biosphere 2, and the “Son of Beast” roller coaster at King’s Island in Mason, Ohio.
Bay Bolt was founded in 1981 and is based out of Oakland, California. The company produces fasteners and other components according to ASTM and SAE standards from materials including medium carbon steel, Alloyed steel, and atmospheric corrosion-resistant steel. They are commonly used in construction, waterworks, and underground situations. The company’s spectrum of fastener products includes bolts, nuts, washers, screws, and socket products. The company’s threaded fasteners cover 19 styles of fasteners, many designs of nuts and washers, and over 8 head styles.
Associated Fastening Products, Inc. (AFP) was established in the early 1990s in Itasca, Illinois. AFP is a manufacturer and distributor of both standard and special fasteners for all uses, with many customers in the agriculture and gun manufacturing industries. Some of AFP’s product and service offerings include automatic screw machining, CNC services, brass fittings, standard fasteners, CNC machining, laser and waterjet cutting services, custom cold headed fasteners, metal stamping services, standard and special washers, cable ties, hardware kits and bagging, Swiss screw machining, inventory management, large diameter bolts, security fasteners, and wire form products.
Arlington Fastener Company was founded in 1969 and is located in Barrington, Illinois near Chicago. The company is a supplier of quality fasteners and through its subsidiary Tuttle Manufacturing, is also a manufacturer of custom fasteners. The company’s offerings include machine screws, sheet metal screws, threaded rods, and thread-forming screws. The company offers over 40,000 unique items in stock including domestic and import fasteners, standard and special. Designs not held in stock can generally be custom manufactured.
Anchor Bolt & Supply, Co. was established in 1952 in Odessa, Texas to provide the Permian Basin region of West Texas with a readily available source of threaded fasteners. Today the company is a manufacturer and distributor of fasteners with over 14,000 line items on shelves as well as more that are available through vendors. The company has 11 product lines of fasteners as well as miscellaneous hardware & accessories such as paint, tape, and other materials. In addition to its product lines, the company offers 24-hour free customer service.
KD Fasteners, Inc. was founded in 1987 and headquartered in Addison, Illinois. The company is a fastener manufacturer and distributor, specializing in custom fasteners from such materials as steel, brass, silicon bronze, and other non-ferrous metals, supplying over 100,000 different fastener components. The company has 3 product segments: standard fasteners, standard metric fasteners, and custom fasteners. Custom fastener varieties include studs, washers, machine screws, flange bolts, and many other varieties. The company also offers many plating varieties including zinc, black oxide, waxing, and Magni 565 and 560.
WIN SOURCE is a customer-focused online store serving a wide variety of markets industries ranging from consumer to automotive to medical, industrial, and aerospace. WS specializes on size and speed, offering a catalog of over 1 million SKUS that can be shipped within 24 hours around the world. Offerings include an extensive array of semiconductor components, audio products, cable assemblies, racks, and battery products. WIN SOURCE is AS9120B, ISO9001, ISO14001, and ISO45001 certified and is a member of the anti-counterfeiting organization, ERAI.
Western States Hardware was founded in La Puente, California in 1968. Western States Hardware serves customers across the United States, offering products in a number of categories including: nuts, screws, & bolts, metric nuts, screws, & bolts, drills & cutting tools, saw blades, electrical connectors, pipe nipples, & pipe fittings, industrial brushes, parker brass fittings & valves, anchors, abrasive pads, belts, & discs, chain & rigging accessories, various tools, valves, staple & nail guns, power & insert bits, and hoses, tubing, & clamps. Altogether, Western States Hardware offers over 750,000 products available.
Texas Specialty Fasteners (TSF) has honorably served as a distributor of hardware as a family-owned company since 1988 and is located in Wylie, Texas. TSF has both standard offering and custom manufacturing services of a wide range of products. These products include screws, nuts, bolts, washers, spacers & standoffs, precision parts, pins, wire handling, inserts, anchors, drill bits, taps, & dies, abrasives & sawblades, safety equipment, and miscellaneous equipment including rivets, handles, catches, and strut accessories.
S.W. Anderson Co. was founded in 1926 and is based in Farmingdale, New York. S.W. Anderson is a customer-based manufacturer and distributor of specialty fasteners, standard fasteners, and other OEM products. S.W. Anderson’s product lineup includes numerous segments including inserts, bearings, fasteners, slides, and isolators. S.W. Anderson distributes from many manufacturers including PEM, Stanley, Hutchinson, Acuuride, and Heyco. S.W. Anderson's services include vendor-managed inventory programs, advanced supply chain management, and order management.
Production Materials Inc. was founded in 1981 and headquartered near Chicago in Wheeling, Illinois. The company is an ISO 9001:2015 certified distributor of fasteners and related components such as nuts, washers, and bolts to manufacturers as well as individuals. The company provides option types such as material, coating, and threading. The company also prototypes and designs parts and offers customization options on many of the parts available. The company also assists customers in the consolidation and standardization of existing parts along with inventory management assistance.
Paramount Fasteners was founded in 1988 and is based in Santa Fe Springs, California. Paramount Fasteners supplies both common and rare industry standard nuts, bolts, screws, and other fastener products. Materials that Paramount Fasteners uses include B16, B8, B8M, B16, B7, 16-4, 17-7, Inconel, Hasteloy, and Monel and provided in 300 series stainless steel, 316 stainless steel, brass, bronze, carbon steel, nylon, and plastic. Paramount Fasters also distributes parts that have painted heads, hot dip galvanized, zinc plated, cad plated, black oxided, chrome plated, and flour coated.
Mil-Spec Fasteners, Corp. is based in Hampstead, Maryland. And is a distributor of fasteners and related equipment. Mil-Spec can also manufacture custom designs in virtually any finish or material. Mil-Spec is ISO 9001:2008 compliant. Mil-Spec’s calibration system is also compliant to MIL-STD-45662A. Mil-Spec’s product categories include cap screws, washers, electronic hardware, bolts, inserts, screws, pins, nuts, rivets, as well as miscellaneous hardware including clamps, fittings, grommets, hinges, O rings, and retaining rings.
MF Supply is a stocking distributor for business, industry, and government. MF Supply specializes in fasteners, hardware, and safety supplies. MF Supply product categories include PPE & safety, brands and equivalents, custom made parts, dowel pins, electronic & panel hardware, inserts, metric, Mil-spec & domestic, nuts & washers, pins, precision shoulder screws, rivets & rivetnut inserts, screw driving tools, screws, self-clinching fasteners, socket products, spacers & standoffs, studs, and other products such as sealants, retaining rings, and screw driving tools.
Interstate Screw Corporation was founded in Miami, Florida in 1956 as a faster distributor and now operates out of Hialeah, Florida with expanded offerings with shipping offered globally and direct delivers across South Florida. Interstate Screw Corporation offers self-tapping screws, self-piercing screws, self-drilling screws, bolts, cap screws and socket products, machine screws and washers, nuts and threaded inserts, heavy duty screws and hollow wall anchors, tamper resistant and miscellaneous products, eyes, hooks, and blind rivets, as well as penetrating oil and electrical connectors.
Hi-Tech Fasteners (HTF) was founded in 1988 and headquartered in Frederick, Maryland. HTF is a distributor of hardware components. HTF offers products in four product types: self-clinching fasteners such as studs and nuts, general fasteners & hardware, inserts, and components. HTF also offers a full line of PEM® Brand products including fasteners for metal sheets and panels, fasteners for BC boards and other non-ductile material, insert for plastics, bonding fasteners, rivet nuts, and fastener installation equipment.
Fasco Inc. was founded in 1978 and is headquartered near Chicago in Alsip, Illinois. The company is a global nut and bolt distributor with locations in the US and Taiwan. The company serves the automotive, transportation, furniture, OEM, and consumer appliance industry among others. Product offerings include fasteners such as bolts and screws, and also parts for steering and brake assemblies, cabling, and pins. The company’s services include Kansan, VMI, and Just-In-Time shipping services to facilitate the efficiency of ordering and customer inventory management.
Engineered Source Inc was founded in 1990 and operates out of Orange, California. Engineered Source Inc is a distributor of precision parts for numerous industries including automotive manufacturers, construction, electronics & robotics, fabrication & assembly, farm & agricultural equipment, gun manufacturers, marine & water treatment, medical manufacturers, and aerospace. Examples of specific products include custom internally threaded square pins, stainless steel pins, steel hex nuts, short dog point socket set screws, zinc plated steel material, custom stamped L brackets, painted self-drilling screws, and custom-locating dowel pins for transit gear units.
Doran Specialties is based in Yorba Linda, California and is a distributor of a variety of fastening hardware and tools. Doran Specialties is 9001:2015 certified. Product categories include AN, MS, NAS, and BAC-certified fasteners including bolts, nuts, fittings, washers, rivets, screws, inserts, and pins. Doran Specialties’s other products include retaining rings, bushings, rods, cables, lanyards, captive screws and nuts, clams, connectors, semiconductors, fuses, keys, machine screws, set screws, spacers and standoffs, springs, wire forms, stampings, switches, washers, and wire. Additional aircraft-specific hardware include hook and loop fasteners, nylon fasteners, O-rings, and plugs.
Coburn-Myers Fastening Systems Incorporated was founded in Trainer, Pennsylvania in 1981. Coburn-Myers manufactures and distributes industrial fasteners and related products. Coburn-Myers focuses both on standard bolts as well as custom designs featuring hundreds of combinations of materials, head styles, heat treatment, secondary operations, and finishes. Types available include hex bolts, heat cap screws, 12-point bolds, and stocked cap screws. Primary product also include buts, fasteners, studs, hand tools, anchors, washers, and other standard products.
Bolt Products Inc. was established in 1947 and operates out of San Dimas, California. Bolt Products is a wholesale distributor of fastening tools both domestically and internationally and is ISO 9001:2015 certified as well as RoHS and WEEE compliant. Bolt Products offers many types of products including bolts and plastic fasteners, nuts, lug nuts, nut retainers, cap nuts, bushings, plugs, ball studs, brass inserts, stud receivers, cable ties, cordgrips, liquid-tight flexible conduits, marking systems, and clips.
Aspen Fasteners was founded in 1961 and headquartered in Las Vegas, Nevada. Aspen Fasteners is a distributor for industrial fasters. Aspen Fasteners offers an extensive line in both metric and inch standards of anchors, bolts, nuts, screws, washers, rings, pins, pipe plugs, rivets, inserts, rods, studs, spacers, standoffs, panel fasteners, and tools including adapters, drivers anchor setting tools, keys, measuring tools, screwdriver insert bits, and screwdriver power bits. Material types include aluminum, brass, copper, iron, lead alloy, monel nickel copper alloy, nylon, phosphor bronze, plastic, silicon bronze, stainless steel, steel, and zinc.
While Racker Company was founded in 1894 and is headquartered in Elk Grove Village, Illinois. The company is a manufacturer servicer, and design engineer of plumbing and CNC machining-related needs for residential, commercial, and industrial customers. The company’s three product categories are marble toilet partition hardware, commercial plumbing, and CNC machining. CNC machining services include aluminum and brass casting, CNC milling, and CNC turning and boring. Marble toilet partition hardware offerings include stall door hardware, stirrups and angles, standards and rails, and anti-theft fasteners. Commercial plumbing products include pipe supports, chrome plated fittings and pipes, and urinal fittings.
HydraCheck was established in 1990 and headquartered in West Valley City, Utah. The company is a distributor of diagnostic testing and maintenance for hydraulic systems across North America. The company provides support services for end customers as well as mechanics and technicians. The company’s product lines include testing products, diagnostic kits, and safety devices. Testing products include flanges, gauges, and thermometers while kits include identification kits and test kits. The company's safety devices include goggles, models, and guides.
EFC International is headquartered in St. Louis, Missouri. The company is ISO 9001:2015 certified and a global distributor of specialty-engineered fasteners and components for industries including agriculture, automotive aftermarket, energy, furniture, and robotics. The company carries products from brands such as Armada Rubber, TRW, Atlas, and Avery Dennison. The company’s products include self-retaining nuts, cable management, lightweight & powertrain, rivets, and others. The company provides custom designs upon request such as carbon fiber and composite fastening.
Dunham Rubber & Belting Corp. (DRB) has been in operation since 1965 and is based in Greenwood, Indiana. DRB offers a variety of products and services, including conveyor belts and accessories, hydraulic hose and fittings, industrial hose and fittings, sanitary hose and fittings, material handling and ducting, sheet rubber and gaskets, UHMW, polycarbonate, and acrylic sheets, as well as supplies for the egg processing, brewery, distillery, and winery industries. In January of 2023, DRB was acquired by Belt Power, an independent distributor and fabricator of conveyor system components.
Circle Valve was founded in 1986 and headquartered in Harleysville, Pennsylvania. Circle Valve is a value-added distributor and manufacture rep of industrial valves, fittings, filters, and measurement control devices for a variety of industries and applications. Among Circle Valve’s product listings are check valves, relief valves, vacuum & high purity fittings, circle seal solenoid valves, Jefferson solenoid valves, Atkomatic solenoid valves GO regulators, cryogenic valves & equipment, hoke valves, Gyrolok Tube Fittings, Circle Seal Control Valves, and various measurement devices.
Howmet Aerospace Inc is a metal product design, engineering, and manufacturing company based in the United States. They were founded in 1888 in Pittsburgh, Pennsylvania. They are a publicly owned company with 27 locations in the United States and six other countries. They produce fasteners and titanium structures, as well as jet engine components and heavy truck aluminum wheels. Aerospace is their largest and fastest expanding market, with solutions ranging from the most innovative investment castings, seamless rings, extrusions, and titanium mill products to airplane fasteners.
Fast-Rite was founded in 1992 and is headquartered in Glendale Heights, Illinois. The company is an ISO 9001:2015 certified manufacturer and distributor of fasteners, abrasives, tools, and accessories to manufacturing and other industries. The company has multiple distribution centers throughout the United States, as well as full-service sales, warehouse, and production facilities in both Mexico and Asia. The company offers rite-stock programs and optimization options. Rite-stock programs include customer-managed inventory, total VMI, virtual inventory, Kanban, and JIT programs. Optimization programs include assembly, automation, and robotics solutions.
ABB Electrification Canada is a subsidiary of industrial giant, ABB. ABB Electrification serves the data center solutions, oil, gas & chemicals, food & beverage, railway, infrastructure, and microgrids industries with solutions such as smart industry, E-mobility, smart living, smart power, smart cities, and smart distribution. Products include control systems, power electronics, UPS and power conditioning, industrial software, PLPC automation, robotics, power converters and inverters, medium voltage products, metallurgy products, control room solutions, and motors and generators.
Würth Industry North America is the North American Branch of Würth Group, originally founded in Germany in 1945. The company is a global designer, manufacturer, and wholesaler of fastening components, materials, and inventory management systems for industries including automotive, manufacturing, and construction. The company offers custom VMI programs, Kanban storage systems, kitting & assembly, 3D printing, and other services to facilitate and expedite customer orders and procurement of supply chain components. The company also offers CAD specialty services including diagrams for hundreds of bolts, nuts, pins, and other fasters.
Essentra Components is a producer of plastic injection moulded, vinyl dip moulded, and metal components, operating in 29 countries across 4 continents. Essentra Component has a catalog of over 45,000 products. These range from caps, plugs, wire & cable management, flange protection, knobs, handles & grips, access hardware, PCB, and electronics hardware. Essentra Component offers free samples of CADs of standard parts for assist customers in creating custom-manufacture red solutions, including prototyping and 3D printing.
Mahabali Steel Centre, established in 1998, is a manufacturer and supplier of stainless steel products based in Mumbai, India. The company offers a range of products, including decorative stainless steel sheets and profiles. These profiles are designed to have a consistent cross-section throughout their entire length. Additionally, the company specializes in stainless steel fabrication, which involves the creation of customized parts and components using raw stainless steel material. Mahabali Steel Centre's products and services cater to the specific requirements of various industries, including oil and gas, chemicals, power plants, pulp and paper, environmental, and engineering.
Ranking as of June 2023 GloballyDerivation Method
|1||Win Source Electronic Technology Ltd.||3.5%|
|2||Foremost Fastener Co.||3.5%|
|3||Mudge Fasteners, Inc.||3.5%|
|4||Bolt Products Inc.||3.5%|
|5||All-Pro Fasteners, Inc.||1.8%|
|7||Product Components Corporation||1.8%|
|8||Anchor Bolt & Supply Co.||1.8%|
|9||White Racker Co.||1.8%|
|10||Paramount Fasteners Inc.||1.8%|
|11||Western States Hardware||1.8%|
|12||Engineered Source, Inc.||1.8%|
|14||C. Sherman Johnson Co., Inc.||1.8%|
|15||G-Fast Distribution Inc||1.8%|
|16||Production Materials, Inc.||1.8%|
|17||Kinter (K International, Inc.)||1.8%|
|18||Associated Fastening Products, Inc.||1.8%|
|19||Suncor Stainless, Inc.||1.8%|
|20||Wyandotte Industries, Inc.||1.8%|
|21||Stock Drive Products/Sterling Instrument - SDP/SI||1.8%|
|22||RAMPA TEC Inc.||1.8%|
|23||Keystone Fastening Technologies, Inc.||1.8%|
|24||Texas Specialty Fasteners||1.8%|
|26||Qualified Fasteners, Inc.||1.8%|
|27||National Bolt & Nut Corp.||1.8%|
|29||Coburn-Myers Fastening Systems, Inc.||1.8%|
|35||Peninsula Components, Inc.||1.8%|
|36||Sales Systems Ltd.||1.8%|
|38||Hi-Tech Fasteners, Inc.||1.8%|
|39||Fast-Rite International, Inc.||1.8%|
|40||J.W. Winco, Inc.||1.8%|
|41||ABB Electrification Canada ULC||1.8%|
|42||Mahabali Steel Centre||1.8%|
|43||KD Fasteners, Inc.||1.8%|
|45||Arlington Fastener Co.||1.8%|
|47||Key Fasteners Corporation||1.8%|
|48||Midwest Screw Products, Inc.||1.8%|
|49||Nova Fasteners Co., Inc.||1.8%|
|50||Rainbow Nut and Bolt, Inc.||1.8%|
|51||Chicago Nut & Bolt, Inc.||1.8%|
|52||OneMonroe (Monroe Engineering Products)||1.8%|
Derivation MethodThe ranking is calculated based on the click share within the cap nut page as of June 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.
Number of Employees
Newly Established Company
Company with a History