S-91717A224 9 mm ID x 28 mm OD Clipped Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh environments
• Precise M8 screw compatibility with 9mm ID ensuring secure, vibration-resistant fastening
• Enhanced load distribution from 28mm OD design, minimizing surface damage and material stress
• Exceptional mechanical strength with Rockwell B55 hardness, resisting deformation under heavy loads
• Quick installation alignment via clipped design (23.3mm width), speeding up assembly processes
• Reliable thickness tolerance (1.4-1.8mm) for consistent performance in automated or manual applications
• Global regulatory compliance meeting RoHS 3 and REACH standards, ensuring safe international usage

Professional Applications & Engineering Value

Engineered for demanding industrial fastening systems, these M8 clipped washers deliver critical performance where vibration loosening and corrosion compromise assembly integrity. The zinc-plated steel core provides sacrificial protection against moisture and chemicals, while the clipped profile enables rapid positioning on conveyorized production lines. With Rockwell B55 hardness maintaining dimensional stability under cyclic loading, they prevent joint failure in machinery, electrical enclosures, and structural frameworks. The metric dimensions (9mm ID/28mm OD) ensure perfect compatibility with standard M8 fasteners, eliminating mismatches in automotive, manufacturing, and infrastructure projects.

Specification Summary & Compliance

Manufactured to metric precision standards with 9mm internal diameter and 28mm outer diameter. Thread compatibility optimized for M8 screw sizes with clipped width of 23.3mm and thickness range of 1.4-1.8mm. Material certification includes zinc-plated steel with Rockwell B55 hardness rating. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements for hazardous substance restrictions.