Value Collection 39712 Sae Flat Washer 1-1/4 in Steel

Product Description

The VALUE COLLECTION 39712 is an SAE flat washer sized for 1-1/4 inch screws, manufactured from Grade 8 steel with a zinc yellow dichromate finish. It measures 1-3/8 inches inside diameter, 2-1/2 inches outside diameter, and 5/32 inches thick. The zinc yellow dichromate coating provides corrosion resistance in demanding service environments. This washer distributes fastener load across a wider bearing surface, reducing pull-through and surface damage on bolted assemblies. It is suited for use in mechanical, structural, and equipment-mounting applications across HVAC, plumbing, and electrical trades where SAE-standard hardware is specified.

This washer is used wherever a 1-1/4 inch fastener requires a broad load-distribution surface. Common applications include equipment bases, structural brackets, ductwork supports, pipe hangers, and electrical enclosure mounting. The SAE designation indicates a larger outer diameter relative to USS-standard washers of the same screw size, making it appropriate for assemblies where bearing area is a design consideration. Installers working with oversized clearance holes or softer substrate materials will find the wider OD particularly useful.

Key Features

• Grade 8 steel construction for high tensile strength in bolted assemblies
• Zinc yellow dichromate finish provides corrosion and oxidation resistance
• SAE sizing with 2-1/2 inch OD delivers broad load distribution
• 1-3/8 inch ID fits 1-1/4 inch screw shanks with standard SAE clearance
• 5/32 inch thickness maintains consistent clamping geometry under torque
• Inch-system dimensions suit standard SAE fastener specifications

Compatibility

Designed for use with 1-1/4 inch SAE-standard fasteners in mechanical and structural assemblies requiring a flat washer with a 1-3/8 inch inside diameter and 2-1/2 inch outside diameter.

Installation Notes

Install using standard hand or power tools appropriate for the fastener size. Ensure the washer seats flush against the mating surface before applying torque to the fastener. Inspect the dichromate coating for damage before installation in corrosive environments, and replace any washer showing cracking or flaking. Follow applicable mechanical codes and equipment manufacturer guidelines when specifying fastener hardware for structural or pressure-containing connections.