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  4. High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread) (Nakajima Koki Co., Ltd.)
High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-BUMAX SDX Hex Bolt M6 Pitch 1 (Full Thread)
High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Nakajima Koki Co., Ltd.

High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)
Nakajima Koki Co., Ltd.

Nakajima Koki Co., Ltd.'s Response Status

Response Rate

100.0%

Response Time

48.3hours

About This Product

BUMAX is a high-strength stainless steel bolt developed for the purpose of design improvement (downsizing and weight reduction). We use Swedish austenitic steel SUS316L material, without heat treatment, and through heading and rolling during the bolt manufacturing process, we have ensured a strength of 8.8 and 10.9, equivalent to that of steel bolts.

■Super duplex stainless steel bolt

Corrosion resistance that surpasses BUMAX bolts. Duplex stainless steel is a material composed of an austenite structure and a ferrite structure, and has excellent crevice corrosion resistance, porosity resistance, and stress corrosion cracking resistance in chloride environments.

■High strength: 4 times the proof strength of SUS304 (A2-50) and 2 times that of SUS316 (A4-70)

Although it is made of stainless steel, BUMAX satisfies the same strength class 10.9 as steel bolts, and is four times stronger and twice as strong (yield strength ). BUMAX has been able to downsize the 20mm diameter bolt design of SUS304 (A2-50) to 10mm diameter, achieving a weight reduction of one-fourth.

■Corrosion resistance: No corrosion occurred even after 10 years of testing in marine environment.

BUMAX has obtained better results than SUS after 10 years of atmospheric exposure in coastal areas, and has proven three times more corrosion resistant than SUS316 in a 20% sulfuric acid corrosion test. Guaranteed 30 years of corrosion resistance even when used on ships exposed to the sea. We guarantee overwhelming corrosion resistance that surpasses other stainless steel bolts.

■Specifications

・Product standards: ISO-4762/4014/4017 ・Material: EN 1.4410, UNS S32750 ・Thread standards: ISO 261/262, JIS B0205/B0209 ・Screw accuracy: 6g ・Strength class: Class 100 ・Tensile strength: 1,000N/mm2 ・Proof strength: 900N/mm2 ・Elongation: 0.4d ・Made of permeable magnetic material: 100 ・Heat-resistant temperature: 300℃ MAX *Items are made to order.

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    High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)

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5 Models of High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)

Click on the part number for more information about each product

Image Part Number Price (excluding tax) Length l 50 (kg/100) Length l 40 (kg/100) Length l 35 (kg/100) Length l 30 (kg/100) Length l 100 (kg/100) Length l 25 (kg/100) Length l 60 (kg/100) Length l 20 (kg/100)
High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Part Number-BUMAX SDX Hex Bolt M6 Pitch 1 (Full Thread)

BUMAX SDX Hex Bolt M6 Pitch 1 (Full Thread)

Available upon quote - - -

0.75

-

0.67

1.3

0.58

High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Part Number-BUMAX SDX hex bolt M8 pitch 1.25 (full thread)

BUMAX SDX hex bolt M8 pitch 1.25 (full thread)

Available upon quote - - -

1.6

-

1.4

2.5

1.2

High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Part Number-BUMAX SDX hex bolt M10 pitch 1.5 (full thread)

BUMAX SDX hex bolt M10 pitch 1.5 (full thread)

Available upon quote - -

2.1

2.6

6.1

1.6

- -
High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Part Number-BUMAX SDX hex bolt M12 pitch 1.75 (full thread)

BUMAX SDX hex bolt M12 pitch 1.75 (full thread)

Available upon quote -

4.5

4.1

3.8

8.8

- - -
High strength stainless steel bolt BUMAXⓇ Super Duplex (SDX) hexagonal bolt (full thread)-Part Number-BUMAX SDX Hex Bolt M16 Pitch 2 (Full Thread)

BUMAX SDX Hex Bolt M16 Pitch 2 (Full Thread)

Available upon quote

10※

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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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