S-90108A171 0.313" ID x 0.75" OD USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel coating, extending service life in harsh industrial environments
• Exceptional load distribution thanks to USS flat design with 0.75" OD, preventing surface damage and fastener loosening
• Precise fit for 1/4" fasteners with 0.313" ID, ensuring secure installation and vibration resistance
• Reliable Grade 5 strength rating providing consistent performance under mechanical stress
• Versatile thickness range (0.051-0.080") accommodates various assembly requirements and gap adjustments
• Full regulatory compliance with RoHS 3 and REACH standards for safe, sustainable industrial use
• Durable steel construction maintains integrity in heavy-duty applications and high-torque scenarios

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion resistance in manufacturing facilities, outdoor equipment, and machinery exposed to moisture or chemicals. As a Grade 5 washer, it maintains dimensional stability under high clamping forces, preventing joint failure in structural applications. The precise 0.313" ID ensures perfect alignment with 1/4" fasteners while the generous 0.75" OD distributes pressure effectively across connected surfaces. These industrial washers are engineered to solve common issues like surface marring, bolt head embedding, and vibration-induced loosening in automotive, construction, and heavy equipment applications.

Specification Summary & Compliance

This USS flat washer meets inch system standards with precise dimensions: 0.313" inner diameter, 0.75" outer diameter, and thickness ranging 0.051-0.080". Manufactured to Grade 5 strength specifications for reliable performance in demanding applications. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (updated 06/14/2023, 235 SVHC), ensuring environmental safety and regulatory adherence for industrial procurement.