S-91190A690 37.7 mm ID x 52.2 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains constant tension under dynamic loads
• Exceptional durability with Black Steel construction and Rockwell C44 hardness for long service life in demanding environments
• Precise dimensional compatibility with 37.7mm ID and 52.2mm OD ensuring perfect fit for M36 fasteners
• Reliable performance standardization through DIN 7980 compliance for consistent quality and interchangeability
• Environmental responsibility with full RoHS 3 and REACH compliance for safe industrial use
• Optimal spring action with 6.7-7.3mm thickness range providing consistent locking force
• Industry-proven design with standard split lock configuration for proven reliability across applications

Professional Applications & Engineering Value

This M36 metric split lock washer delivers critical vibration resistance in heavy machinery, construction equipment, and industrial assemblies where constant motion and stress would otherwise loosen standard fasteners. The Black Steel construction with Rockwell C44 hardness ensures the washer maintains its spring properties under extreme pressure and repetitive loading cycles. Engineered to DIN 7980 specifications, this lock washer provides reliable locking performance that prevents costly downtime and maintenance in automotive, manufacturing, and structural applications. The split design creates continuous tension that compensates for material settling and thermal expansion, making it ideal for industrial applications requiring sustained fastener security.

Specification Summary & Compliance

This split lock washer features precise dimensions with 37.7mm internal diameter, 52.2mm outer diameter, and 6.7-7.3mm thickness range. Manufactured to DIN 7980 standards for dimensional accuracy and performance reliability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The Rockwell C44 hardness rating guarantees consistent mechanical properties and long-term performance in demanding applications.