Value Collection MP42453 M7 Split Lock Washer Grade 8 100pk

Product Description

The VALUE COLLECTION MP42453 is an M7 metric split lock washer designed to resist fastener loosening caused by vibration and dynamic loads. Made from Grade 8 spring steel with a zinc plated finish, this washer delivers reliable tension retention in bolted assemblies. It measures 7.1mm minimum inside diameter with a maximum inside diameter of 8.5mm and a maximum outside diameter of 14.8mm, with a thickness of 1.7mm. Hardness is rated at 44 to 51 HRC. Each package contains 100 washers, making it suitable for production, maintenance, and repair applications. Machinists, millwrights, and general maintenance technicians are the primary installers of this fastener component.

This split lock washer is used in metric bolted connections across a wide range of industrial, mechanical, and structural applications. It is appropriate for both residential and commercial projects wherever M7 fasteners are specified. The spring action of the split washer bites into the mating surface and fastener head, adding resistance against rotation and loosening under load. It conforms to DIN 127 fastener standards and is measured in the metric system of measurement.

Key Features

• Grade 8 spring steel construction rated at 44 to 51 HRC hardness for high load capacity
• Zinc plated finish for basic corrosion resistance in general-use environments
• Conforms to DIN 127 metric fastener standard
• Minimum inside diameter of 7.1mm, maximum outside diameter of 14.8mm, thickness of 1.7mm
• Pack of 100 washers per package for production and service applications
• Does not meet military specifications — suitable for commercial and industrial use only

Compatibility

Designed for use with M7 metric fasteners in applications where DIN 127 split lock washers are specified. Verify inside diameter clearance and seating surface requirements before installation.

Installation Notes

Installation of split lock washers is performed by machinists, millwrights, or maintenance technicians working on bolted assemblies. Always de-energize or isolate the equipment before disassembly. Place the washer on the fastener shank between the fastener head or nut and the mating surface, ensuring the split ends contact the surface fully when torqued. Do not reuse deformed or flattened lock washers, as spring tension will be reduced.