[1000 BULK] Structural Flat Washers Medium Carbon Steel Zinc Yellow CR+6 F436 5/16 X 11/16 Markdown

Our Structural Flat Washers are engineered from Medium Carbon Steel for high-strength performance, and finished with a Zinc Yellow CR+6 coating for superior corrosion resistance. Meeting the ASTM F436 standard, these washers provide reliable load distribution for structural fasteners. The size is 5/16″ inner diameter by 11/16″ outer diameter, making them a precise fit for standard 5/16″ bolts.

Key specifications

Inner diameter: 5/16 in

Outer diameter: 11/16 in

Material: Medium Carbon Steel

Finish: Zinc Yellow CR+6 coating

Standards: ASTM F436

Why choose these washers?

Distribute load to prevent bolt/nut pull-through and protect mating surfaces

Provide corrosion resistance with a durable Zinc Yellow CR+6 coating

Structural-grade reliability for construction, machinery, automotive, and general hardware applications

Designed for high-stress assemblies, these washers help ensure secure, long-lasting connections in your next project. Add them to your toolkit for dependable performance.