Value Collection SIWIS0750HDUSA-010BX Lock Washer

Product Description

The VALUE COLLECTION SIWIS0750HDUSA-010BX is a heavy-duty internal tooth lock washer designed to provide reliable fastener retention under vibration and dynamic load conditions. Manufactured from Grade 2 spring steel with a zinc-plated finish, this washer measures 0.79 inches inside diameter and 1.26 inches outside diameter with a thickness of 0.078 inches. The internal tooth design bites into both the fastener bearing surface and the mating workpiece, resisting loosening without adding significant stack height. It is sized for use with 3/4-inch screw fasteners and suits mechanical assemblies across HVAC, electrical, plumbing, and general industrial applications.

This lock washer is appropriate for residential and commercial mechanical installations where fastener security is critical. Typical applications include equipment mounting, panel attachment, and structural hardware assembly. The zinc plating provides a basic level of corrosion resistance suitable for indoor and sheltered environments. The internal tooth configuration makes it well suited for smaller bolt-head clearances where external tooth washers would not fit cleanly. Minimum order quantity is 10 pieces.

Key Features

• Internal tooth design bites into fastener and workpiece to prevent loosening under vibration
• Grade 2 spring steel construction provides consistent tension and durability
• Zinc-plated finish offers basic corrosion resistance for indoor and sheltered use
• Heavy-duty designation for demanding mechanical fastening applications
• Sized for 3/4-inch screw fasteners with 0.79-inch inside diameter
• Minimum order quantity of 10 pieces per order

Compatibility

Designed as a standard internal tooth lock washer for use with 3/4-inch screw fasteners in general mechanical, HVAC, electrical, and industrial assembly applications.

Installation Notes

This washer is installed between the fastener head and the mating surface before tightening. Ensure the workpiece surface is clean and free of debris so the teeth can seat properly. Follow applicable torque specifications provided by the equipment manufacturer or relevant code. Do not reuse lock washers that have been fully compressed or show signs of tooth deformation.