Value Collection 361020PR M4 Split Lock Washer Grade 8

Product Description

The VALUE COLLECTION 361020PR is an M4 metric split lock washer designed to resist fastener loosening caused by vibration and dynamic loading. Made from Grade 8 spring steel with a zinc plated finish, this washer delivers consistent clamping force and corrosion resistance in demanding service environments. It measures 4.1 mm minimum inside diameter, 4.4 mm maximum inside diameter, 7.6 mm outside diameter, and 0.9 mm thick. Hardness is rated 44-51 HRC. Manufactured to DIN 127 standards, it is sold individually with a minimum order quantity of 100 pieces.

This split lock washer is suited for use in mechanical assemblies, equipment fabrication, and structural fastening applications where metric M4 hardware is specified. It is commonly installed in light industrial equipment, HVAC unit assemblies, electrical enclosures, and plumbing fixture mounting where vibration could compromise fastener retention. The zinc plating provides a base level of corrosion protection appropriate for indoor and controlled-environment installations.

Key Features

• Grade 8 spring steel construction rated 44-51 HRC for reliable bite and clamping
• Zinc plated finish for corrosion resistance in standard service environments
• Conforms to DIN 127 fastener standard for metric compatibility
• Split lock design resists loosening under vibration and dynamic loads
• Inside diameter range of 4.1 to 4.4 mm fits standard M4 fasteners

Compatibility

Designed as a DIN 127 metric split lock washer compatible with M4 screw and bolt assemblies in standard metric fastening applications.

Installation Notes

Install between the fastener head or nut and the mating surface, with the split ends oriented to bite into both surfaces when torqued. De-energize and de-pressurize any system before disassembling fastened joints. Use calibrated torque tools appropriate to the fastener grade and material being joined. Do not reuse lock washers that have been fully compressed or deformed during prior installation.