... ,GB,JIS,Non-standard 3.Class:4.8,8.8,10.9,12.9 4.Surface:customers demand 1. Standards: DIN ... , stainless steel, alloys steel.3. Class: 4.8,8.8,10.9,12.9.etc4. Surface: plain, zinc plated, black oxide, ... (fish bolt) with mechanical property of Grade 8.8 and 9.8.3. Bolt used on guardrail panel of ... shearing bolt with mechanical property of Grade 8.8, 10.9 and 12.9.5. Stainless steel internal and external ...