S-91860A051 3.2 mm ID x 7 mm OD DIN 125 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 17-7 PH stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength and durability provided by Rockwell C40 hardness, ensuring long service life under load
• Precise dimensional fit for M3 screws with 3.2mm ID and 7mm OD, preventing loosening and ensuring secure fastening
• Reliable performance in metric assemblies due to compliance with DIN 125 standards for consistent quality and interchangeability
• Enhanced load distribution from the flat washer design (0.4-0.6mm thickness), reducing surface pressure and material stress
• Safe for sensitive applications with full compliance to RoHS 3 and REACH regulations, avoiding hazardous substances
• Wide industrial applicability in machinery, electronics, and automotive sectors where precision and corrosion resistance are critical

Professional Applications & Engineering Value

This M3 flat washer made from 17-7 PH stainless steel addresses common engineering challenges like corrosion-induced failure and inconsistent load bearing. Its Rockwell C40 hardness ensures it maintains integrity under vibration and thermal cycling, making it suitable for industrial applications in automotive assemblies, electrical enclosures, and precision instruments. The metric dimensions and DIN 125 compliance guarantee exact fit with M3 screws, reducing installation errors. The flat washer design effectively distributes clamping force, preventing surface damage and extending the life of connected components, while the corrosion-resistant material performs reliably in humid or chemically aggressive environments.

Specification Summary & Compliance

This washer features precise dimensions: Inner Diameter of 3.2 mm, Outer Diameter of 7 mm, and Thickness between 0.4-0.6 mm, designed for M3 screw size. It conforms to DIN 125 standards, ensuring dimensional accuracy and performance consistency. The product is manufactured from 17-7 PH Stainless Steel with a hardness of Rockwell C40, and it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety requirements for industrial use.