S-90339A212 Easy-Install Slotted Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel finish, ideal for humid or demanding industrial environments.
• Precise compatibility with 3/4" screw sizes, ensuring secure and reliable fastening in assemblies.
• Superior durability from Rockwell B40 hardness, providing long-lasting performance under mechanical stress.
• Easy installation and adjustment with 13/16" slot width and 1 1/8" slot depth for quick tool access.
• Regulatory compliance assurance with RoHS 3 and REACH, meeting strict environmental and safety standards.
• Optimal load distribution due to 1.375" OD and consistent thickness (0.084-0.097"), reducing point stress.
• Heavy-duty reliability in inch system applications, suitable for construction and machinery assemblies.

Professional Applications & Engineering Value

This black-oxide steel slotted washer is engineered to address common industrial challenges such as corrosion, misalignment, and fastener failure. The black-oxide finish provides a protective layer that resists rust and wear, extending service life in harsh conditions like outdoor equipment or high-moisture areas. With a precise slot width of 13/16" and depth of 1 1/8", it allows for easy adjustment and secure placement with standard tools, minimizing assembly time and errors. Ideal for heavy-duty applications including machinery, structural frameworks, and automotive systems, this washer ensures consistent performance with its Rockwell B40 hardness, preventing deformation under load. Its compatibility with 3/4" screw sizes in the inch system makes it a versatile choice for engineers seeking reliable, corrosion-resistant components that meet rigorous industry standards.

Specification Summary & Compliance

This slotted washer features an outer diameter of 1.375", thickness range of 0.084-0.097", and is manufactured to standard inch measurements for precise fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial uses. The design adheres to common engineering tolerances for reliable performance in mechanical assemblies.