Bowmalloy KP80421 Sae Uss Flat Washer 1 Screw Steel

Product Description

The BOWMALLOY KP80421 is a Grade 9 steel SAE/USS flat washer sized for 1 screw applications. It features a clear zinc chromate finish that provides corrosion resistance in general-purpose fastening applications. The washer measures 1.0910 inches inside diameter and 2.0000 inches outside diameter, with a thickness of 0.1400 inches. Manufactured to ASTM F436 standards, it is suited for structural and mechanical assemblies where load distribution across a bearing surface is required. Electricians, plumbers, HVAC technicians, and general contractors install these washers when securing bolted connections in equipment panels, brackets, and structural components.

This washer is used in both residential and light commercial fastening applications. It fits 1 screw or bolt installations where SAE or USS flat washer geometry is called out by specification. The ASTM F436 standard designation makes it appropriate for structural bolt assemblies. Typical use cases include equipment mounting, pipe hangers, bracket installations, and panel fastening where a broad bearing surface is needed to prevent fastener pull-through or surface damage.

Key Features

• Grade 9 steel construction for reliable strength in structural and mechanical applications
• Clear zinc chromate finish provides corrosion resistance for indoor and light-duty outdoor use
• Meets ASTM F436 fastener standard for structural washer applications
• SAE and USS dual-standard geometry suits a wide range of bolt and screw assemblies
• 1.0910 inch inside diameter with 2.0000 inch outside diameter for broad load distribution
• Thickness of 0.1400 inches maintains consistent clamp load and surface protection

Compatibility

Designed as an OEM-style replacement or standard flat washer for use with 1 screw and bolt fastener assemblies conforming to SAE and USS flat washer specifications.

Installation Notes

Install using standard hand or power tools appropriate for the fastener size. Ensure the washer is seated flat against the bearing surface before applying torque to the fastener. Inspect the zinc chromate finish for damage before installation; compromised coating may reduce corrosion resistance in exposed environments. Follow applicable mechanical or structural codes for the assembly type being serviced.