S-90339A207 Easy-Install Slotted Washers

Key Features & Benefits at a Glance

• Enhanced corrosion protection with black-oxide steel finish for extended service life in demanding environments
• Precise 3/8" screw compatibility with optimized 13/32" slot width and 3/4" slot depth for secure fastening alignment
• Superior load distribution through 1" outer diameter design, reducing surface pressure and material stress
• Consistent mechanical performance ensured by Rockwell B40 hardness rating for reliable deformation resistance
• Regulatory compliance assurance with RoHS 3 and REACH adherence for global industrial safety standards
• Dimensional stability maintained through controlled 0.056-0.071" thickness range for uniform spacing applications
• Heavy-duty construction utilizing inch-system specifications for compatibility with industrial equipment standards

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this slotted washer addresses critical challenges in machinery assembly and structural fastening. The black-oxide steel construction provides essential corrosion resistance in environments exposed to moisture and chemicals, while the precisely calculated 1" OD and thickness range ensures optimal load distribution across joined surfaces. The specialized 13/32" slot width and 3/4" slot depth are engineered specifically for 3/8" screw applications, preventing misalignment and maintaining fastener integrity under vibration and dynamic loads. This combination of material properties and dimensional accuracy makes it ideal for automotive assemblies, construction equipment, and manufacturing machinery where Rockwell B40 hardness ensures long-term performance without deformation or failure.

Specification Summary & Compliance

This slotted washer features inch-system dimensions including 1" OD, 0.056-0.071" thickness range, 13/32" slot width, and 3/4" slot depth specifically designed for 3/8" screw applications. Manufactured from black-oxide steel with Rockwell B40 hardness rating, the product maintains dimensional accuracy for reliable performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures adherence to international environmental and safety standards for industrial components.