S-91116A430 17 mm ID x 50 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional durability with Rockwell B68 hardness, ensuring long service life under heavy loads
• Precise dimensional fit with 17mm ID and 50mm OD, providing reliable load distribution for M16 screws
• Consistent thickness control between 2.7-3.3mm, maintaining uniform pressure across mating surfaces
• Guaranteed compliance with DIN 9021 standards, ensuring interchangeability and engineering reliability
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict regulatory requirements
• Versatile metric sizing compatible with international equipment and maintenance protocols

Professional Applications & Engineering Value

This M16 flat washer delivers critical engineering value through its Black-Oxide 18-8 Stainless Steel composition, specifically engineered to combat corrosion in demanding applications. The DIN 9021 specification ensures precise dimensional tolerances for perfect alignment with M16 fastener systems, preventing joint loosening and material fatigue. In industrial machinery, chemical processing equipment, and outdoor installations, the corrosion-resistant properties significantly reduce maintenance frequency while the Rockwell B68 hardness maintains structural integrity under vibration and heavy clamping forces. The metric dimensions (17mm ID × 50mm OD) provide optimal bearing surface area, distributing loads effectively to prevent surface damage and extend component lifespan in heavy-duty washers applications.

Specification Summary & Compliance

Manufactured to DIN 9021 standards with metric dimensions: 17mm inner diameter, 50mm outer diameter, and thickness range of 2.7-3.3mm. Constructed from 18-8 Stainless Steel with Black-Oxide surface treatment and Rockwell B68 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial distribution and use.