Stainless steel 304 316 3/8" Stainless Steel Hex Bolt m8x1.25 bolt metric hex bolt
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Stainless steel 304 316 3/8" Stainless Steel Hex Bolt m8x1.25 bolt metric hex bolt

Material: Stainless steel 304

Finish: Plain

Standard: DIN931

Certification: ISO9001

MOQ:1000PCS

Samples: Free

Place of Origin: Zhejiang China

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Product Details

Product Description
Applications
Precautions for Use
Packaging and Delivery
Standard: DIN931
Size: M5-M100
Material: Stainless steel
Grade: A2-70 A4-80
 Thread: Metric
Finish: Plain,Nickel, Chrome
Packing: Box+Cartons+wood Pallet or according to customer special demand
Application: Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Trade Term: FOB/CIF/CFR/CNF/EXW/DDU/DDP
Payment T/T, L/C
Market: South&north Amrica/Europe/East&South east Asia/ Australia and ect.
Our advantage: One-stop shopping;
High quality;
Competitive price;
Timely delivery;
Technical support;
Supply Material and Test Reports;

 

304 Chemical Composition(%)
Grade C≤ Mn≤ Si≤ S≤ P≤ Cr Ni N≤
  0.08 2 0.75 0.03 0.045 18.0-20.0 8.0-10.5 0.1

 

304 Mechanical property
σb≥ σ0.2≥  δ5 (%)≥ Hardness(HB)(kgf/mm2)]
520(Mpa) 205(Mpa) 40%  ≤187 HRB≤90 HV ≤200

 

DIN931

Screw Thread

P b c k s
Thread Pitch L≤125 125<L≤200 L>200 min max Nominal Size Grade A Grade B max Grade A Grade B
min max min max min min
M5 0.8 16 22 - 0.15 0.5 3.5 3.35 3.65 - - 8 7.78 -
M6 1 18 24 - 0.15 0.5 4 3.85 4.15 - - 10 9.78 -
(M7) 1 20 26 - 0.15 0.5 4.8 4.65 4.95 - - 11 10.73 -
M8 1.25 22 28 - 0.15 0.6 5.3 5.15 5.45 - - 13 12.73 -
M10 1.5 26 32 45 0.15 0.6 6.4 6.22 6.58 - - 17 16.73 -
M12 1.75 30 36 49 0.15 0.6 7.6 7.32 7.68 - - 19 18.67 -
(M14) 2 34 40 53 0.15 0.6 8.8 8.62 8.98 - - 22 21.67 -
M16 2 38 44 57 0.2 0.8 10 9.82 10.18 9.71 10.29 24 23.67 23.16
(M18) 2.5 42 48 61 0.2 0.8 11.5 11.28 11.72 11.15 11.85 27 26.67 26.16
M20 2.5 46 52 65 0.2 0.8 12.5 12.28 12.72 12.15 12.85 30 29.67 29.16
(M22) 2.5 50 56 69 0.2 0.8 14 13.78 14.22 13.65 14.35 32 31.61 31
M24 3 54 60 73 0.2 0.8 15 14.78 15.22 14.65 15.35 36 35.38 35
(M27) 3 60 66 79 0.2 0.8 17 - - 16.65 17.35 41 - 40
M30 3.5 66 72 85 0.2 0.8 18.7 - - 18.28 19.12 46 - 45
(M33) 3.5 72 78 91 0.2 0.8 21 - - 20.58 21.42 50 - 49
M36 4 78 84 97 0.2 0.8 22.5 - - 22.08 22.92 55 - 53.8

 
  • Mechanical Manufacturing: Used for assembling machinery and equipment, such as automotive parts, industrial robots, and machine tools.
  • Construction Engineering: Suitable for steel structure connections, curtain wall installations, bridges, and high-rise buildings.
  • Electrical Installations: Used for securing electrical enclosures, wiring components, and other electrical installations.
  • Electronics: Ideal for electronic device assembly, particularly in electronic products requiring non-reflective surfaces.
  • Pre-Installation Inspection: Check the bolt's appearance for defects such as cracks, burrs, or deformed threads. Ensure the thread tolerance meets requirements and that the bolt and nut fit well.
  • Correct Installation Methods: Use tools like wrenches or sockets to tighten the bolts. Avoid excessive force to prevent thread damage or bolt breakage. For high-strength bolts, follow specified preload values and tighten in stages.
  • Maintenance During Use: Regularly inspect the bolts for looseness or corrosion. Tighten any loose bolts promptly. If corrosion occurs, remove rust and apply anti-corrosion treatment. In harsh environments, consider applying anti-rust oil or grease to enhance corrosion resistance.
  • Packaging: Typically bulk-packed in cartons, with a maximum weight of 25–30 kg per carton. Small boxes can also be used for inner packaging, with outer cartons on wooden pallets. Custom packaging is available upon request.
  • Delivery: Lead time is generally 30–45 working days after order confirmation. For urgent orders, express shipping options may be available.