S-90452A124 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for humid or chemically aggressive environments.
• Precise square hole design ensures secure, non-rotating fit on 1/2" fasteners, preventing loosening under vibration.
• Optimized load distribution from the 1" outer diameter, reducing surface pressure and material stress.
• Dimensional consistency with a thickness range of 0.055-0.065" for reliable performance in assembly stacks.
• Broad industrial compatibility using the inch measurement system, suitable for North American machinery and equipment.
• Environmental and safety compliance meeting RoHS 3 and REACH standards for use in regulated markets.
• Enhanced durability from stainless steel material, offering long service life with minimal maintenance.

Professional Applications & Engineering Value

This square hole washer is engineered to address common industrial challenges such as fastener slippage and corrosion-induced failure. Manufactured from 18-8 Stainless Steel, it provides superior resistance to rust and oxidation, making it perfect for outdoor, marine, or chemical processing equipment. The precise 0.555" inside width and square geometry lock securely onto 1/2" screws, eliminating rotation during dynamic operations. This design is critical in heavy machinery, structural assemblies, and conveyor systems where vibration resistance is paramount. Its compliance with RoHS and REACH ensures it meets stringent environmental and health standards, providing peace of mind for B2B procurement in regulated industries.

Specification Summary & Compliance

This washer features an OD of 1", thickness of 0.055-0.065", and inside width of 0.555", designed for use with 1/2" screws in the inch system. It is manufactured from 18-8 Stainless Steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial applications.