7/16" 18-8 Stainless Steel Lock Washers – Corrosion-Resistant – Qty 500

SKU: 3159
Product Type: Helical split lock washer
Size / Fit: 7/16" (for 7/16" screws/bolts; ~0.4375" nominal screw diameter)
Material: 18-8 (304) stainless steel
Finish: Plain stainless, typically passivated (no coating)
Function: Adds spring tension and edge bite to resist loosening from vibration/shock
Compatibility: Works with 7/16-14 UNC and 7/16-20 UNF fasteners; use with matching stainless hardware
Standards/References: ASME B18.21.1 (split lock washers)
Corrosion Resistance: Excellent—suitable for outdoor and marine environments
Magnetism: Non-magnetic to slightly magnetic (typical for 18-8)
Usage Notes: On soft/finished surfaces, place a flat washer under the lock washer to protect the mating surface
Package Quantity: 500 washers
 
SKU: 3159
Keep assemblies tight under vibration with our 7/16" 18-8 Stainless Steel Lock Washers (Qty 500). These helical split lock washers apply spring tension and biting action to help prevent loosening in automotive, marine, industrial, and DIY applications. Made from 18-8 (304) stainless steel, they deliver excellent corrosion resistance for indoor and outdoor use. Pair with 7/16" stainless bolts or screws (UNC or UNF) for a durable, rust-resistant connection.
Terms of Service: 60-day money-back with free return shipping.
Motto: We won’t screw you—but our fasteners will.