S-91116A120 3.2 mm ID x 9 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise dimensional accuracy ensures a perfect fit for M3 screws, preventing assembly issues and improving installation efficiency.
• Excellent load distribution with a 9mm outer diameter, protecting sensitive surfaces from damage and extending component lifespan.
• Consistent mechanical strength provided by Rockwell B52 hardness, resisting deformation under pressure for reliable long-term performance.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets and regulated industries.
• DIN 9021 standard conformity guarantees interchangeability and compatibility with other metric fastener systems.
• Optimized thickness range (0.7-0.9mm) provides the ideal balance between spacing functionality and space constraints.

Professional Applications & Engineering Value

These M3 flat washers manufactured from 18-8 stainless steel deliver critical engineering solutions across multiple industries. The DIN 9021 specification ensures precise dimensional control, eliminating compatibility issues in metric fastener systems. The corrosion-resistant properties address common failure points in manufacturing equipment, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. With their Rockwell B52 hardness, these washers maintain structural integrity under vibration and thermal cycling, preventing loosening in dynamic applications. The optimized 9mm OD provides superior surface coverage while the 3.2mm ID ensures secure seating on M3 fasteners, making them ideal for precision engineering where reliability is paramount.

Specification Summary & Compliance

This flat washer conforms to DIN 9021 dimensional standards with precise metric measurements: 3.2mm inner diameter, 9mm outer diameter, and 0.7-0.9mm thickness range. Manufactured from 18-8 stainless steel with Rockwell B52 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. Designed specifically for M3 screw applications in industrial and commercial settings.