The Complete Guide to Stainless Steel Bolts: Grades, Applications & Selection Tips
stainless steel bolts, 304 vs 316 bolts, corrosion-resistant bolts, industrial fasteners, bolt strength
Introduction
Stainless steel bolts remain one of the most widely used fasteners in industrial, construction and marine applications. Their corrosion resistance, high strength and long service life make them ideal for environments where durability matters.
What Are Stainless Steel Bolts?
Stainless steel bolts are threaded fasteners made from alloy steel with a minimum of 10.5% chromium, giving them excellent rust resistance. The most common grades are 304 and 316, each suitable for different environments.
Key Differences Between 304 and 316 Bolts
| Grade | Features | Best For |
|---|---|---|
| 304 SS | General corrosion resistance, cost-effective | Indoor, machinery, furniture, automotive |
| 316 SS | With molybdenum for superior salt & chemical resistance | Marine, offshore, high-moisture, chemical processing |
Applications
Mechanical engineering
Marine structures
Automotive & heavy machinery
HVAC systems
Industrial equipment assembly
How to Choose the Right Stainless Steel Bolt
Check corrosion level of the environment
Confirm size & thread standard (DIN, ISO, ANSI)
Consider tensile strength and load requirements
Match with washer & nut material
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