S-90377A155 0.938" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the 2" outer diameter, reducing surface pressure and preventing material damage
• Precise fit for 7/8" screws with 0.938" inner diameter, ensuring secure fastening and vibration resistance
• Durable mechanical performance thanks to Rockwell B68 hardness, maintaining shape under high stress
• Consistent thickness control between 0.170-0.200" for reliable spacing and uniform clamping force
• Compliance with global standards including RoHS 3 and REACH, ensuring safe use in regulated industries
• Long-term reliability in heavy-duty applications due to robust material and finish

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel flat washer is engineered to address common industrial challenges such as corrosion, wear, and fastener loosening. The Black-Oxide finish provides an added layer of protection against oxidation and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. With its 0.938" ID and 2" OD, it effectively distributes load across a wider area, preventing surface indentation and maintaining joint integrity in heavy-duty assemblies. The stainless steel material ensures consistent performance in temperature variations and humid conditions, reducing maintenance needs and downtime. Ideal for construction, machinery, and automotive applications, this washer enhances the longevity and safety of critical connections.

Specification Summary & Compliance

This flat washer features precise dimensional tolerances with an inner diameter of 0.938" and outer diameter of 2", designed to fit 7/8" screw sizes in inch measurement systems. The thickness range of 0.170-0.200" ensures accurate spacing, while the Rockwell B68 hardness guarantees mechanical durability. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.