Value Collection 741086PS M6 External Tooth Lock Washer

Product Description

The VALUE COLLECTION 741086PS is an M6 external tooth lock washer designed to maintain fastener tension and resist loosening under vibration and dynamic loads. Stamped from Grade 2 spring steel and finished with a zinc plating for corrosion resistance, this washer seats beneath a screw or bolt head and bites into the mating surface when torque is applied. The serrated external teeth deform slightly during installation, creating mechanical resistance that prevents fastener back-out. With an inside diameter of 6.4mm and an outside diameter of 11.0mm, it is sized for standard M6 fastener assemblies. Electricians, plumbers, HVAC technicians, and mechanical contractors use this type of hardware in panel, bracket, and equipment-mounting applications.

This lock washer is suited for general industrial and trade applications where M6 fasteners are used on metal substrates. Typical uses include securing electrical enclosure hardware, HVAC equipment mounting brackets, plumbing fixture assemblies, and light structural connections. The external tooth design provides greater locking surface engagement compared to internal tooth styles, making it a common choice where the fastener head fully covers the washer. Minimum order quantity is 200 pieces per order.

Key Features

• External tooth design bites into substrate and fastener head to resist loosening under vibration
• Grade 2 spring steel construction provides reliable elasticity and holding force
• Zinc-plated finish offers corrosion resistance for indoor and lightly exposed environments
• 6.4mm inside diameter sized for M6 screws and bolts
• 11.0mm outside diameter with 0.7mm thickness for low-profile installations

Compatibility

Designed as a standard M6 external tooth lock washer for use with M6 screws and bolts in general mechanical, electrical, and HVAC trade assemblies.

Installation Notes

Install with the teeth facing the surface being clamped, placing the washer between the fastener head and the mating material. Power down and de-energize any electrical equipment before working on panel or enclosure hardware. Use calibrated torque tools appropriate to the fastener grade and application. Do not reuse lock washers that have been fully compressed or deformed, as the locking teeth will not engage effectively on reinstallation.