321 Stainless Steel Fasteners

1. What standards apply to 321 fasteners? ASTM A193 (bolts) and ASTM A194 (nuts).

2. Can 321 fasteners be used at high temperatures? Yes, up to 870°C for continuous service.

3. Are 321 fasteners weldable? Yes, they can be welded to 321 components without sensitization.

4. What is the difference between 321 and 316 fasteners? 321 for high heat/welding; 316 for chloride corrosion.

5. Can 321 fasteners be customized? Yes, custom thread types and lengths are available.