Value Collection 84798891 M12 Split Lock Washer Grade 8

Product Description

The VALUE COLLECTION 84798891 is a metric split lock washer designed for use with M12 fasteners. Made from Grade 8 spring steel with a zinc plated finish, this washer provides resistance to loosening caused by vibration and dynamic loads. It measures 12.2 to 12.7mm inside diameter and 21.1mm outside diameter, with a thickness of 2.5mm. Hardness is rated at 44-51 HRC, ensuring the washer bites into mating surfaces to maintain clamp load. This component is commonly installed by maintenance technicians, millwrights, and tradespeople working on mechanical assemblies requiring reliable fastener retention.

This split lock washer is suited for use in general industrial, commercial, and trade applications where M12 metric fasteners are used. Typical installations include equipment mounting, structural connections, and mechanical assemblies across HVAC, plumbing, electrical, and industrial maintenance work. It conforms to DIN 127 fastener standards and is also aligned with ASME, ANSI, BS, JIS, and NFE standards, making it appropriate for both domestic and internationally specified assemblies.

Key Features

• Grade 8 spring steel construction with 44-51 HRC hardness for reliable bite and clamp retention
• Zinc plated finish provides corrosion resistance in general-purpose service environments
• Meets DIN 127 fastener standard; also conforms to ASME, ANSI, BS, JIS, and NFE standards
• Inside diameter range of 12.2 to 12.7mm accommodates standard M12 fastener shanks
• 2.5mm thickness provides consistent spring action under load
• Metric split lock design resists loosening from vibration without additional locking hardware

Compatibility

Designed for use with M12 metric screws and bolts in assemblies requiring a DIN 127 compliant split lock washer. Suitable for general-purpose mechanical and structural fastening applications.

Installation Notes

Installation is performed by mechanics, millwrights, or licensed tradespeople as part of standard fastener assembly. Power down and de-energize any equipment before servicing fastened connections. Place the washer on the fastener shank before seating against the mating surface, and tighten to the torque specification defined by the fastener and joint design. Do not reuse lock washers that have been fully compressed flat, as spring action will be lost.