S-90126A030 0.344" ID x 0.688" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc plating extends service life in demanding industrial environments
• Precise dimensional fit with 0.344" ID ensures perfect compatibility with 5/16" screws and bolts
• Optimized load distribution through 0.688" OD design minimizes surface damage and material stress
• Industry-standard compliance with ASME B18.21.1 guarantees consistent quality and performance
• Environmental responsibility through RoHS 3 and REACH compliance for safe industrial applications
• Versatile thickness range (0.051-0.080") accommodates various assembly requirements and tolerances
• Durable steel construction provides reliable mechanical strength for long-term fastening solutions

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value by addressing critical industrial challenges. The SAE standard design with precise inch measurements ensures perfect fitment for 5/16" screw applications across automotive, machinery, and construction sectors. The zinc plating provides essential corrosion resistance, preventing galvanic reactions and maintaining structural integrity in humid or chemically aggressive environments. The flat washer configuration effectively distributes clamping force, preventing surface damage to assembled components while maintaining joint integrity under vibration and thermal cycling. This combination of material protection and dimensional precision makes them ideal for maintenance, repair, and OEM applications where reliability and compliance with industrial standards are paramount.

Specification Summary & Compliance

Manufactured to exact ASME B18.21.1 specifications, these flat washers maintain precise dimensional tolerances with 0.344" inner diameter and 0.688" outer diameter. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory adherence. The zinc-plated steel construction provides consistent performance while meeting industrial quality requirements for inch-system fastening applications.