S-91081A037 0.938" ID x 2.25" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - Large 2.25" outer diameter provides superior surface coverage, preventing surface damage and maintaining structural integrity under high-pressure applications.
• Precise Screw Compatibility - 0.938" inner diameter ensures perfect fit for 7/8" screws, eliminating play and ensuring secure fastening in critical assemblies.
• Optimized Thickness Range - 0.136-0.192" thickness variation allows for proper compression and gap filling, accommodating minor surface irregularities in industrial settings.
• Certified Material Quality - Steel construction meets ASME B18.21.1 standards, guaranteeing consistent performance and reliability in demanding mechanical applications.
• Environmental Compliance Assurance - RoHS 3 and REACH compliant for safe usage across global markets, eliminating concerns about hazardous substances in manufacturing facilities.
• USS Standardization - Manufactured to USS flat washer specifications, ensuring interchangeability and replacement consistency in maintenance and repair operations.
• Durability in Harsh Conditions - Robust steel material withstands corrosion and mechanical stress, extending service life in industrial machinery and equipment.

Professional Applications & Engineering Value

This USS flat washer delivers critical engineering solutions for 7/8" screw applications where vibration resistance and load distribution are paramount. The steel construction combined with ASME B18.21.1 compliance ensures reliable performance in heavy machinery, structural steel connections, and industrial equipment assemblies. The precise 2.25" OD and 0.938" ID dimensions prevent bolt head embedment while distributing clamp load effectively across joined surfaces. Particularly valuable in construction, manufacturing, and maintenance operations, this flat washer addresses common challenges like surface marring, joint loosening, and material fatigue. The inch system measurement makes it ideal for North American industrial standards, while environmental compliance ensures global supply chain compatibility without performance compromises.

Specification Summary & Compliance

This USS standard flat washer features dimensional specifications of 2.25" outer diameter, 0.938" inner diameter, and thickness ranging 0.136-0.192" for 7/8" screw size applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations (updated 06/14/2023, 235 SVHC), ensuring environmental safety and regulatory acceptance for industrial distribution and usage.