S-90339A209 Easy-Install Slotted Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments.
• Superior load distribution from the 1.5" outer diameter, preventing surface damage and loosening under heavy loads.
• Precise slot alignment with 17/32" width and 1" depth for easy installation and secure fit with 1/2" screws.
• Consistent mechanical strength ensured by Rockwell B40 hardness, reducing deformation risks in high-stress applications.
• Reliable dimensional stability with thickness ranging from 0.084" to 0.097", maintaining uniform pressure distribution.
• Compliance with global standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Optimized for inch-system assemblies, facilitating seamless integration with existing industrial equipment.

Professional Applications & Engineering Value

This black-oxide steel slotted washer is engineered to address common industrial fastening challenges, such as vibration-induced loosening and corrosion in demanding environments. The black-oxide finish provides a durable barrier against moisture and chemicals, significantly reducing maintenance needs in applications like machinery assembly, structural frameworks, and outdoor equipment. Its 1.5" OD and Rockwell B40 hardness ensure even load distribution and resistance to wear, while the precise slot dimensions allow for quick alignment and secure locking with 1/2" screws. Ideal for heavy-duty sectors including manufacturing, construction, and automotive, this washer delivers long-term reliability and performance consistency.

Specification Summary & Compliance

Manufactured to exact inch-system specifications, this washer features an OD of 1.5", thickness between 0.084" and 0.097", slot width of 17/32", and slot depth of 1". It conforms to standard dimensional tolerances for industrial slotted washers and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards in global supply chains.