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  2. Fastening Components
  3. Hexagon Head Cap Screws
  4. 14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread) (Nakajima Koki Co., Ltd.)
14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M6 (half thread)
14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-Nakajima Koki Co., Ltd.

14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)
Nakajima Koki Co., Ltd.

Nakajima Koki Co., Ltd.'s Response Status

Response Rate

100.0%

Response Time

48.3hours

About This Product

Developed jointly with Kyokuto Seisakusho Co., Ltd., a leading manufacturer that boasts high technological capabilities. A new revolutionary product has been released that uses a thin-film anti-corrosion coating called "Delta Protect" on the "14.9" hexagon socket head bolt. It boasts a tensile strength of 1,400N/mm2 and has survived over 1,000 hours of salt spray resistance. Boasts high rust resistance. Chromium-free non-electrolytic thin film zinc flake coating eliminates the risk of hydrogen embrittlement.

■Features

1.Does not cause hydrogen embrittlement Since no hydrogen is produced during the coating process, there is no risk of hydrogen-induced stress corrosion cracking. For this product, we do not use normal pickling in the pre-treatment process, but instead use shot blasting. 2. Maintains high rust prevention performance with a thin and uniform coating Delta Protect's paint itself has low viscosity and high permeability, so it penetrates and coats even the smallest details of hexagonal holes and screw threads. Also, a hexagonal hole is not a problem as it does not easily cause liquid pooling. In addition, the threaded parts are subject to Class 1 gauge (4h) control (sampling inspection). 3. Low drying temperature of paint The low drying temperature of 180 to 220℃ for the base coat and 180 to 200℃ for the top coat makes it difficult to change the properties of the material for heat-treated products and high-tension steel that do not like reheating. 4.Compliant with environmental regulations All paints do not contain RoHS6 substances (lead, mercury, cadmium, chromium, PBB, PBDE). We have over 25 years of experience as a chrome-free paint mainly for European automobile manufacturers.

■What is MJ screw?

The MJ standard, which exists as an aerospace standard, has a shallower threaded root and a larger root radius than normal standards, which improves fatigue resistance by alleviating the notch effect. .

■Specifications

・Material: KNDS4 (High-strength bolt steel manufactured by Kobe Steel, Ltd.) ・Hardness: HRC44~50 ・Tensile strength: 1,400N/mm2 ・Strength class: 14.9 ・Elongation: 9%min (equivalent to strength class 10.9) ・Dimensions standard: JIS B1176 *Excluding neck back R ・Thread type: ISO 5855-1 MJ screw (for aerospace) ・Thread grade: 4g6g based on ISO 5855-1 ・Surface treatment: Delta protect Base coat: KL100 x 2 coats Top coat: VH300 x 1 coat

  • Product

    14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)

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4 Models of 14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)

Click on the part number for more information about each product

Image Part Number Price (excluding tax) Stock range 50 Stock range 45 Stock range 40
14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-Part Number-14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M6 (half thread)

14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M6 (half thread)

Available upon quote - - -
14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-Part Number-14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M8 (half thread)

14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M8 (half thread)

Available upon quote

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14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-Part Number-14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M10 (half thread)

14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M10 (half thread)

Available upon quote

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14.9 Ultra-strength hexagon socket head bolt with delta protect top coat (half thread)-Part Number-14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M12 (half thread)

14.9 Ultra-strength hexagon socket head bolt with delta protect top coat M12 (half thread)

Available upon quote - - -

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About Company Handling This Product

Nakajima Koki Co., Ltd.

Response Rate

100.0%

Response Time

48.3hrs

  • Japan

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Hexagon Head Cap Screws
Hexagon Head Cap Screws　Nakajima Koki Co., Ltd.
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