All Categories

History

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-BUMAX hexagon socket head bolt M3
High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Nakajima Koki Co., Ltd.

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt
Nakajima Koki Co., Ltd.

Nakajima Koki Co., Ltd.'s Response Status

Response Rate

100.0%

Response Time

46.8hours


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.

■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.

■Heat resistance: Guaranteed maximum operating temperature in the atmosphere of 600℃

SUS304/SUS316 can normally be used up to 400℃, but BUMAX can be used up to 600℃, which is 50% higher. For stainless steel bolts whose strength is increased by heat treating martensitic materials, the maximum operating temperature is set at 200℃, one-third of BUMAX. Here too, the high-strength stainless steel bolt BUMAX exhibits outstanding heat resistance compared to all stainless steel bolts.

■Specifications

・Product standards: ISO-4762, JIS B 1176, DIN 912 ・Material: A4-SS 2343 316L HiMo ・Thread standards: ISO 261/262, JIS B0205/B0209 ・Screw accuracy: 6g ・Strength class: Class 80, Class 100 ・Tensile strength: 800N/mm2, 1,000N/mm2 ・Proof strength: 640N/mm2, 900N/mm2 (M12 or less) /800N/mm2 (M16 or more) ・Shear strength: 520N/mm2, 650N/mm2 ・Elongation: 0.3d, 0.2d - Operating temperature range: -200℃~500℃, -200℃~600℃

  • Product

    High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt

Share this product


1230+ people viewing

Last viewed: 2 hours ago


Free
Get started with our free quotation service - no cost, no obligation.

No Phone Required
We respect your privacy. You can receive quotes without sharing your phone number.

10 Models of High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt

Click on the part number for more information about each product

Image Part Number Price (excluding tax) Head height k Min. (mm) Head height k Max. (mm) Head diameter dk standard (mm) Head diameter dk Min. (mm) Head diameter dk Max. (mm) Body diameter ds Min. (mm) Body diameter ds Max. (mm) Effective cross-sectional area coarse (mm2) Nominal diameter d (mm) Hexagon hole depth e Min. (mm) Hexagon hole width across flats s nominal (mm) Width across hexagonal hole s Min. (mm) Width across hexagon hole s Max. (mm) Hexagonal hole diagonal e Min. (mm) Pitch p coarse (mm) Thread length b (mm)
High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M3

BUMAX hexagon socket head bolt M3

Available upon quote

2.86

3

5.5

5.32

5.68

2.86

3

5.03

M3

1.3

2.5

2.52

2.58

2.87

0.5

18

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M4

BUMAX hexagon socket head bolt M4

Available upon quote

3.82

4

7

6.78

7.22

3.82

4

8.78

M4

2

3

3.02

3.08

3.44

0.7

20

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M5

BUMAX hexagon socket head bolt M5

Available upon quote

4.82

5

8.5

8.28

8.72

4.82

5

14.2

M5

2.5

4

4.02

4.095

4.58

0.8

Twenty two

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M6

BUMAX hexagon socket head bolt M6

Available upon quote

5.7

6

10

9.78

10.22

5.82

6

20.1

M6

3

5

5.02

5.14

5.72

1

Twenty four

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M8

BUMAX hexagon socket head bolt M8

Available upon quote

7.64

8

13

12.73

13.27

7.78

8

36.6

M8

4

6

6.02

6.14

6.86

1.25

28

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M10

BUMAX hexagon socket head bolt M10

Available upon quote

9.64

10

16

15.73

16.27

9.78

10

58

M10

5

8

8.025

8.175

9.15

1.5

32

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M12

BUMAX hexagon socket head bolt M12

Available upon quote

11.57

12

18

17.73

18.27

11.73

12

84.3

M12

6

10

10.025

10.175

11.43

1.75

36

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M16

BUMAX hexagon socket head bolt M16

Available upon quote

15.57

16

Twenty four

23.67

24.33

15.73

16

157

M16

8

14

14.032

14.212

16

2

44

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M20

BUMAX hexagon socket head bolt M20

Available upon quote

19.48

20

30

29.67

30.33

19.67

20

245

M20

10

17

17.05

17.23

19.44

2.5

52

High strength stainless steel bolt BUMAXⓇ Hexagon socket head bolt-Part Number-BUMAX hexagon socket head bolt M24

BUMAX hexagon socket head bolt M24

Available upon quote

23.48

Twenty four

36

35.61

36.39

23.67

Twenty four

353

M24

12

19

19.065

19.275

21.73

3

60

Click on the part number for more information about each product

Customers who viewed this product also viewed

Reviews shown here are reviews of companies.

See More Hexagon Head Cap Screws Products

Other products of Nakajima Koki Co., Ltd.

Reviews shown here are reviews of companies.


View more products of Nakajima Koki Co., Ltd.

About Company Handling This Product

Response Rate

100.0%


Response Time

46.8hrs

  • Japan

This is the version of our website addressed to speakers of English in the United States. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.

Copyright © 2025 Metoree