S-98029A037 0.906" ID x 1.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution with 1.75" outer diameter to prevent surface damage and material embedment
• Superior Corrosion Resistance from black-oxide steel surface treatment for extended service life in demanding environments
• Precision Fit Guarantee with 0.906" inner diameter specifically engineered for 7/8" screw applications
• Optimal Thickness Range (0.136-0.161") provides consistent compression and vibration resistance
• Global Compliance Assurance meeting RoHS 3 and REACH standards for international industrial projects
• Durable Steel Construction delivers reliable performance in heavy-duty assembly applications
• Inch System Compatibility ensures seamless integration with existing imperial measurement equipment

Professional Applications & Engineering Value

These black-oxide steel flat washers deliver critical engineering solutions for industrial applications requiring reliable load distribution and corrosion protection. The precisely engineered 0.906" inner diameter ensures perfect alignment with 7/8" screws, eliminating installation issues while the substantial 1.75" outer diameter effectively distributes clamping force across wider surface areas. This prevents material deformation in soft substrates and reduces stress concentration points in structural assemblies. The black-oxide surface treatment provides essential corrosion resistance for machinery, outdoor equipment, and manufacturing environments where moisture and chemicals are present. With consistent 0.136-0.161" thickness, these washers maintain uniform pressure in bolted connections, making them ideal for automotive, construction, and heavy equipment applications where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.906" ID and 1.75" OD with thickness tolerance of 0.136-0.161", engineered specifically for 7/8" screw applications. Manufactured from black-oxide steel for durability, the product complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) compliance standards as of January 17, 2023, covering 233 Substances of Very High Concern.