S-91166A380 40 mm ID x 72 mm OD DIN 125; ISO 7090 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 through zinc plating extends service life in humid or outdoor environments
- Exceptional load distribution with 72mm outer diameter prevents surface damage and joint loosening
- Precision dimensional fit with 40mm inner diameter ensures perfect alignment with M39 fasteners
- Consistent performance maintained through Rockwell B75 hardness for reliable pressure resistance
- International compliance assurance with DIN 125 and ISO 7090 standards guarantees interchangeability
- Environmental regulation adherence through RoHS 3 and REACH compliance for global supply chain compatibility
- Optimized thickness range (5.4-6.6mm) provides ideal balance between spacing and compression requirements
Professional Applications & Engineering Value
These zinc plated steel flat washers deliver critical engineering solutions for heavy-duty industrial applications where vibration resistance and corrosion prevention are paramount. The metric flat washer design conforms to both DIN 125 and ISO 7090 standards, ensuring perfect compatibility with M39 fasteners in European and international machinery. The zinc plating creates a sacrificial layer that actively protects against rust in manufacturing facilities, construction equipment, and marine environments. With Rockwell B75 hardness, these washers maintain structural integrity under extreme pressure, preventing deformation that could compromise bolted connections. The precise 40mm ID/72mm OD configuration provides optimal surface contact, distributing clamp load effectively to protect sensitive materials and prevent joint failure in high-vibration scenarios.
Specification Summary & Compliance
This metric flat washer features dimensional precision per DIN 125 and ISO 7090 standards with 40mm inner diameter, 72mm outer diameter, and 5.4-6.6mm thickness range. Manufactured from zinc plated steel with Rockwell B75 hardness certification. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, including the latest SVHC requirements as of January 2023.
