S-91455A360 40 mm ID x 72 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
• Exceptional load distribution thanks to the 72mm outer diameter, preventing surface damage and maintaining joint integrity under M39 screw loads
• Precision dimensional accuracy with 40mm inner diameter ensuring perfect fit and secure fastening without slippage
• Enhanced mechanical durability from Rockwell B91 hardness, providing reliable performance under high stress and repeated use
• Guaranteed international compatibility through compliance with both DIN 125 and ISO 7089 standards for global engineering projects
• Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe usage in regulated industries
• Optimized thickness range (5.4-6.6mm) offering consistent spacing and vibration resistance in heavy-duty assemblies

Professional Applications & Engineering Value

This M39 zinc plated steel flat washer delivers critical engineering solutions where corrosion resistance and structural reliability are paramount. The zinc plating provides a protective barrier against moisture and chemicals, significantly reducing maintenance needs in outdoor machinery, construction equipment, and marine applications. Manufactured to DIN 125 and ISO 7089 standards, it ensures precise dimensional consistency for M39 fastener systems, eliminating misalignment and distributing clamp load effectively across connected surfaces. With its Rockwell B91 hardness, the washer maintains shape under extreme pressure, preventing deformation in heavy industrial assemblies, structural steel connections, and automotive frameworks where vibration and dynamic loads are constant challenges.

Specification Summary & Compliance

This flat washer features precise metric dimensions: 40mm inner diameter, 72mm outer diameter, and 5.4-6.6mm thickness range. Manufactured according to DIN 125 and ISO 7089 standards, it ensures dimensional accuracy and interchangeability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications while meeting international quality and safety requirements.