Value Collection LW7XX01200-100BX M12 Split Lock Washer

Product Description

The VALUE COLLECTION LW7XX01200-100BX is an M12 metric split lock washer manufactured from 316 austenitic stainless steel to Grade A4 designation and conforming to the DIN 127B fastener standard. Split lock washers create spring tension under a fastener head or nut to resist loosening caused by vibration, thermal cycling, or dynamic loading. This washer is supplied in a bright, uncoated finish with a minimum inside diameter of 12.20 millimeters, a maximum inside diameter of 12.70 millimeters, a maximum outside diameter of 21.10 millimeters, and a maximum thickness of 2.50 millimeters. The Grade A4 316 alloy provides strong resistance to chloride-induced corrosion, making this washer suitable for marine, chemical, and outdoor structural applications where standard carbon steel hardware would corrode prematurely.

This washer is intended for M12 fastener assemblies requiring metric hardware per DIN 127B. Typical installation scenarios include marine deck hardware, outdoor structural connections, process piping flanges, food-processing equipment frames, and any bolted joint exposed to moisture or corrosive environments. Maintenance technicians, pipefitters, millwrights, and structural fitters routinely use this grade of hardware when corrosion resistance is a primary design requirement. The metric sizing makes it directly applicable to equipment built or specified to metric standards.

Key Features

• Grade A4 316 austenitic stainless steel construction for high corrosion resistance in chloride and marine environments
• Meets DIN 127B fastener standard for metric split lock washers
• Bright, uncoated finish — no coating thickness variation affecting dimensional tolerances
• Split helical design creates spring tension to resist fastener back-off under vibration
• M12 screw size fit with 12.20 mm minimum ID and 12.70 mm maximum ID for consistent seating

Compatibility

Designed as an OEM-style metric split lock washer for use with M12 threaded fasteners in assemblies requiring DIN 127B-compliant hardware.

Installation Notes

Installation is typically performed by maintenance technicians, pipefitters, or structural fitters as part of a bolted joint assembly. Place the split lock washer between the fastener nut or bolt head and the mating surface before torquing the fastener. Do not flatten the washer fully during installation, as the split coil must retain residual spring load to function correctly. Follow applicable torque specifications for M12 Grade A4 fasteners as defined by the equipment manufacturer or applicable structural codes.