Automotive Bolts: High Strength Steel, Stainless Steel & Titanium for EV & Chassis Applications (DIN, ISO, GB, ASME)

Key Features & Automotive Applications

1. GB/T 8-1988 (China):

   • Widely used in commercial vehicle chassis for M6–M30 connections.
   • Black oxide finish provides basic corrosion resistance (salt spray 72h).

2. DIN 603:1987 (Germany):

   • Stainless steel (A2/A4) variants prevent rust in EV battery pack assemblies.

3. ASME B18.5-2022 (USA):

   • SAE Grade 5 material (≥120 ksi tensile strength) for heavy-duty truck suspensions.

4. JIS B 1182:1995 (Japan):

   • Dacromet-coated alloy steel bolts for coastal climate applications (salt spray 480h+).

5. ISO 8765:2022 (Global):

   • Titanium alloy reduces weight by 40% vs. steel, ideal for EV lightweighting.

Industry Recommendations

1. EV Battery Frames:
   • Use ISO 8765 titanium bolts for weight reduction and corrosion resistance.
2. Chassis Connections:
   • Prioritize DIN 603 stainless steel or JIS B 1182 Dacromet-coated bolts.
3. Aftermarket Repairs:
   • GB/T 8-1988 black oxide bolts offer cost-effective solutions for non-critical parts.

For full technical drawings and compliance certificates, refer to official standards from DIN or SAE.