S-91455A530 31 mm ID x 56 mm OD DIN 125; ISO 7089 General Purpose Washers
General Purpose Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion protection with zinc-flake coating that withstands harsh industrial environments
- Exceptional load distribution across 56mm OD surface area for enhanced joint stability
- Precision dimensional accuracy with 31mm ID ensuring perfect fit for M30 fasteners
- Optimized mechanical strength from Rockwell B91 hardness rating for heavy-duty applications
- Reliable thickness consistency between 3.7-4.3mm for uniform clamping force distribution
- Global compliance assurance meeting both DIN 125 and ISO 7089 international standards
- Environmentally responsible manufacturing with full RoHS 3 and REACH regulatory compliance
Professional Applications & Engineering Value
This M30 flat washer delivers critical engineering value through its zinc-flake coated steel construction, specifically engineered to solve common industrial challenges. The advanced coating system provides superior corrosion resistance that outperforms conventional plating methods, making it ideal for outdoor equipment, automotive assemblies, and marine applications where moisture exposure compromises fastener integrity. With precise 31mm ID/56mm OD dimensions conforming to DIN 125 and ISO 7089 specifications, it eliminates improper seating issues that lead to joint loosening under vibration. The controlled 3.7-4.3mm thickness ensures consistent surface pressure distribution, preventing material deformation in high-load structural connections while the Rockwell B91 hardness maintains dimensional stability under extreme compression forces.
Specification Summary & Compliance
Manufactured to exacting DIN 125 and ISO 7089 dimensional standards with precision-machined 31mm internal diameter and 56mm outer diameter. Features controlled thickness tolerance of 3.7-4.3mm and material hardness of Rockwell B91. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, including the latest SVHC requirements updated January 2023.
