S-93837A260 28.5 mm ID x 38.9 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening under dynamic loads, ensuring long-term joint integrity in high-stress applications
• Zinc-plated steel construction provides excellent corrosion resistance for extended service life in demanding industrial environments
• Precision-engineered dimensions (28.5mm ID, 38.9mm OD) guarantee perfect fit and optimal spring action for M27 fasteners
• Rockwell C44 hardness rating delivers exceptional durability and maintains locking force through repeated assembly cycles
• DIN 7980 compliance ensures consistent quality and interchangeability with other standard metric components
• Split lock design creates continuous spring tension that compensates for thermal expansion and material relaxation
• Environmental compliance with RoHS 3 and REACH regulations makes these washers suitable for global supply chains and sensitive applications

Professional Applications & Engineering Value

This M27 split lock washer delivers critical vibration-resistant performance for industrial machinery, heavy equipment, and structural assemblies where secure fastening is paramount. The zinc-plated steel construction provides essential corrosion protection in manufacturing facilities, outdoor installations, and marine environments. Engineered to DIN 7980 standards, these metric lock washers maintain consistent spring force across temperature variations and load cycles, preventing costly downtime from fastener failure. The split design creates continuous opposing force that counters rotational loosening in vibration-prone applications such as motors, pumps, conveyor systems, and construction equipment. With precise dimensional control (28.5mm ID, 38.9mm OD), these washers ensure proper seating and optimal spring action for M27 threaded fasteners in critical joints.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 28.5mm inner diameter, 38.9mm outer diameter, and 4.8-5.2mm thickness range. Manufactured to DIN 7980 standards with Rockwell C44 hardness for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental safety requirements for industrial components. Designed specifically for M27 screw sizes, this standard lock washer maintains dimensional accuracy and mechanical properties per German industrial standards.