S-92140A124 0.812" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from the black-oxide steel finish, extending service life in demanding environments.
• Optimal load distribution with a large 2" outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit for 3/4" screws with a 0.812" inner diameter, ensuring secure fastening and reducing assembly errors.
• Consistent thickness (0.240-0.260") provides reliable performance and uniform clamping force in repetitive applications.
• Robust steel construction offers excellent durability and strength for heavy-duty industrial use.
• Compliance with major environmental regulations (RoHS 3 & REACH) ensures safe, responsible sourcing for global supply chains.
• Standard inch system sizing simplifies procurement and replacement in North American and compatible markets.

Professional Applications & Engineering Value

This black-oxide steel flat washer is engineered to address common industrial challenges such as fastener loosening, surface abrasion, and corrosion-induced failure. The black-oxide surface treatment provides a protective layer that significantly improves resistance to rust and oxidation, making it ideal for applications exposed to moisture, oils, or mild chemicals. Its generous 2" outer diameter effectively disperses clamping force over a wider area, protecting soft materials and reducing stress concentrations in assemblies using 3/4" screws. Commonly specified in construction, machinery, and heavy equipment manufacturing, this washer ensures long-term joint integrity, minimizes maintenance needs, and supports efficient assembly line operations where reliability is critical.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensions with an inner diameter of 0.812", outer diameter of 2", and thickness ranging from 0.240" to 0.260". It is manufactured from carbon steel with a black-oxide finish for corrosion protection. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant as of January 17, 2023, affirming its adherence to stringent environmental and safety standards for industrial components.