S-91190A650 28.5 mm ID x 38.9 mm OD DIN 7980 Split Lock Washers for Socket Head Screws
Split Lock Washers for Socket Head Screws
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance prevents fastener loosening in high-stress environments
- Exceptional durability with Black Steel construction and Rockwell C44 hardness rating
- Precise dimensional fit with 28.5mm ID specifically engineered for M27 screw applications
- Optimized load distribution through 38.9mm OD design for enhanced bearing surface
- Industry-standard compliance with DIN 7980 specifications for reliable performance
- Environmental responsibility with RoHS 3 and REACH compliance for safe industrial use
- Consistent thickness control (4.8-5.2mm) ensures uniform clamping force and reliability
Professional Applications & Engineering Value
This M27 metric split lock washer delivers critical vibration-dampening performance for demanding industrial applications where mechanical stability is paramount. Engineered from high-strength Black Steel with Rockwell C44 hardness, the standard split lock design creates continuous spring tension that compensates for thermal expansion, material creep, and dynamic loads. The precisely calibrated 28.5mm ID and 38.9mm OD dimensions ensure perfect compatibility with M27 screw systems while providing optimal load distribution. Ideal for heavy machinery, structural assemblies, and vibration-prone equipment, this DIN 7980 compliant washer solves critical fastening challenges in manufacturing, construction, and automotive sectors where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exact DIN 7980 standards with precise dimensional tolerances, this split lock washer features 28.5mm internal diameter, 38.9mm outer diameter, and controlled thickness between 4.8-5.2mm. The Black Steel construction achieves Rockwell C44 hardness for maximum durability. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and material transparency for global industrial applications.
