[100 PKG] Flat Washers SAE Medium Carbon Thru Hardened Zinc Yellow 5/16

Flat Washers SAE Medium Carbon Thru Hardened Zinc Yellow 5/16 are precision-made washers designed to provide even bearing pressure, reduce damage to mating surfaces, and resist wear in demanding automotive and industrial applications. The SAE medium carbon steel core offers a balance of strength and formability, while the thru-hardened process delivers reliable hardness without compromising flexibility.

Key features

• Material: SAE medium carbon steel
• Heat treatment: Thru-hardened for excellent hardness and wear resistance
• Finish: Zinc yellow coating for enhanced corrosion resistance
• Size: 5/16 in nominal size
• Applications: Ideal for automotive, machinery, and construction assemblies requiring reliable load distribution

Benefits

• Distributes load evenly across the joint to protect mating surfaces
• Resists corrosion in moisture-rich or outdoor environments thanks to the zinc finish
• Through-hardening improves durability under repeated assembly cycles

For best results, pair these flat washers with compatible fasteners and tighten to the manufacturer’s torque specifications. This 5/16 in washer is a versatile choice for a wide range of projects that demand long-lasting performance.