Value Collection 744191PS M30 Split Lock Washer Grade 8

Product Description

The VALUE COLLECTION 744191PS is an M30 metric split lock washer manufactured from Grade 8 spring steel with a bright, uncoated finish. It is designed to resist loosening under vibration and dynamic loads by biting into the bearing surface of the fastener and the mating material when tightened. The washer measures 30.5 mm minimum inside diameter, 48.2 mm outside diameter, and 6 mm thick, with a hardness rating of 44 to 51 HRC. It conforms to DIN 127 fastener standards and is sold as an individual piece with a minimum order quantity of 25 units.

This washer is used in heavy mechanical assemblies, structural bolted connections, and industrial equipment requiring M30 fastener hardware. It is appropriate for applications where joint integrity under cyclic loading or vibration is a concern. Typical users include millwrights, maintenance mechanics, and industrial contractors working on machinery, steel structures, and heavy equipment. The uncoated finish suits indoor or protected environments where corrosion exposure is minimal.

Key Features

• Conforms to DIN 127 fastener standard for metric split lock washers
• Grade 8 spring steel construction with 44 to 51 HRC hardness for reliable clamping force
• 30.5 mm minimum ID to 31.7 mm maximum ID accommodates M30 fastener shanks
• 48.2 mm outside diameter, 6 mm thickness for consistent load distribution
• Bright, uncoated finish — no plating buildup that could affect dimensional tolerances
• Does not meet military specifications — suitable for commercial and industrial use

Compatibility

Designed for use with M30 metric fasteners in assemblies requiring DIN 127 split lock washers. Fits M30 screws and bolts with a shank clearance accommodating 30.5 mm to 31.7 mm inside diameter.

Installation Notes

Installation is performed by millwrights, maintenance mechanics, or any qualified tradesperson working with M30 metric fastener assemblies. Always de-energize and lock out equipment before servicing bolted joints on machinery or powered structures. Place the split lock washer between the fastener head or nut and the bearing surface, with the split ends oriented to bite into both surfaces upon final torque. Do not reuse compressed or fully flattened lock washers, as they will not provide adequate spring action.