This section provides an overview for spherical washers as well as their applications and principles. Also, please take a look at the list of 23 spherical washer manufacturers and their company rankings.
Table of Contents
A spherical washer is a washer that uses two washers together in a set: a concave washer with a flat and spherical surface on one side and a concave-convex washer with a flat and convex spherical surface on the other side.
Spherical washers are used to correct the angle of the shaft of a tap or bolt that has been tightened at an angle and cannot be removed.
When a bolt is angled, only a portion of the axial force applied to the bolt is transmitted to the base metal, which reduces the axial force on the base metal, and the remaining force is consumed as frictional force in the gap.
The angle that can be compensated by a spherical washer is about 3 degrees. If the angle is too large, using a spherical washer will not be effective, so tightening the bolt as much as possible will improve the force being consumed.
Spherical washers are used to absorb and compensate for the angle of a bolt or tap shaft that has been tightened at an angle.
The spherical washer is placed so that the concave side of the washer contacts the base metal and the convex side contacts the top of the bolt. By tightening the bolt in this condition, the angle of the bolt fixed at an angle is reduced and the bolt can be tightened so that the seating surface does not float.
It should be noted that the axial force is reduced by not transmitting enough force from the bolt.
Spherical washers use two pairs of concavo-convex spherical surfaces on each side to reduce the inclination created between the bolt and the base metal, and to correct the tightening of bolts that have been tightened at an angle.
As the inclination increases, the area of the bolt in contact with the base metal becomes smaller, causing it to cave in, or to slip, because the axial force is no longer transmitted to the base metal.
The spherical washer is placed between the angled bolt and the base metal, and tightened in this condition, the convex spherical surface slides over the concave spherical surface as the bolt is tightened, and the convex spherical washer naturally corrects itself to the same angle as the bolt axis, preventing the seating surface from floating. This prevents the seat from floating.
*Including some distributors, etc.
Sort by Features
Sort by Area
TE-CO Workholding was founded in 1926 and is headquartered in Union, Ohio. The company is a manufacturer of work-holding technology and tooling components sold nationally and internationally through distributors. The company’s product segments include Tooling Components, Tooled Vise WOrkholding Systems, Spring Loaded Devices, Clamping Levers, and CMM Picturing & Inspection Components. The Company also offers 2D and 3D CAD models, drawings, and detailed information in various data formats to assist customers in choosing and modifying designs for their needs.
The Fastron Co., established in 1942, is an ISO 9000-certified US designer and manufacturer of custom cold-headed parts. Their facility is located in Melrose Park, Illinois. The company produces client-specific screws with their own patented technology, Form-Fast, and Clamp-Fast. Further, they provide screw machine conversion services for cold-headed production, the process of moving material to form the desired shape. Their products can be manufactured in various sizes and materials, including steel, brass, silicon, and aluminum, thus they are applied in a wide range of uses, most notably electronics. Additionally, they provide sourcing services for international customers.
BudgitHoist.com is headquartered in Forest Lawn, Illinois and is owned and operated by Sievert Electric Service and Sales Company. Sievert Electric is a distributor for Budgit Hoist who is the producer. BudgitHoist produces 1/4 to 3t electric chain hoists, air chain hoists, trolleys, repair parts, and other accessories. BudgitHoist offers additional services such overhead crane design sales, service, and repair, as well as electrical repairs and new construction. Additionally, BudgitHoist offers communication installations, repairs, and maintenance, as well as scoreboard installation repair and construction.
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.
Mädler North America was founded in 2020 as the US-based subsidiary of Mädler which was founded in Berlin, Germany in 1882. Mädler specializes in manufacturing precision-made machine parts. Product lines include linear guides, bearings, bushes, bevel gears, worm wheels, castors and wheel systems, couplings, fastening elements, clutches, gear boxes, idlers, linear bearings, locking assemblies, machine mounts, elements for pneumatic machines various joints, rubber padding and dampers, splined shafts and hubs, sprockets, timing belts, spindles, adhesives, sealants, and other assorted accessories.
Daco Precision - Tool, established in 1984, is a US ISO 9001:2015 certified metal stamping manufacturer located in Kewaskum, Wisconsin. The company produces various metal products, including steel, aluminum, and brass, for distributors and OEM companies. The products are used in a range of industries, such as medical, electronics, military, construction, and automotive, and can be found in residential and commercial applications. Further, the company provides several services, including custom parts design, laser cutting, light assembly, and vibratory deburring.
AmeriStar Manufacturing, Inc. was established in 1908 and headquartered in Mankato, Minnesota. The company is an ISO 9001:2015 certified full-service metal manufacturing company capable of on-site tool making. The company’s services include metal stamping, CNC machining, sheet metal fabrication, electro-mechanical assembly, and engineering & tool building. The company provides support for SMI, VMI, and Kanban programs to support customers’ inventory management as well as other contract manufacturing services including warehousing and shipping.
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.
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.
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.
Morton Machine Works was founded in 1939 and is headquartered in Millersburg, Pennsylvania. The company is a manufacturer of tooling components supplying to industrial distributors, catalog houses, and OEMs throughout the world. The company offers custom manufacturing capabilities in an ISO 9001-certified facility for customers in industries such as metalworking, OEM, automotive, aerospace, and medical industries. The company’s product categories include various fasteners, plungers, leveling pads, locating components, and work holding components.
SKF UK is the British division of SKF, originally founded in 1907 and headquartered in Gothenburg, Sweden. SKF designs, develops, and manufacturers bearings, seals, lubrication systems, and services worldwide, with industrial and automotive segments, providing solutions for industries including aerospace, agriculture, transportation, food and beverage, general machinery, material handling, mining, energy, paper, and wind energy. SKF UK offers rolling bearings, mounted bearings, automotive seals, lubrication management, vehicle aftermarket services, waste electric products, and electronic equipment products as well as services including maintenance, remanufacturing, customization, and training.
MISUMI USA is the American subsidiary of MISUMI. MISUMI provides engineering resources for a variety of industries including automotive, medical equipment, consumer packaging, and semiconductor. MISUMI is both a manufacturer and distributor. MISUMI offers over 20 million total parts. Product categories include automation components, fasteners, materials, wiring components, electrical & control products, cutting tools, tools & accessories, material handling & storage, safety & general supplies, lab & clean room supplies, press die components, plastic mold components, and injection molding components.
Number of Employees
Newly Established Company
Company with a History