Value Collection SIWIS1000USA-100BX Lock Washer 100

Product Description

The VALUE COLLECTION SIWIS1000USA-100BX is a 1 screw size internal tooth lock washer designed for use in mechanical fastening assemblies where vibration resistance is required. Constructed from Grade 2 steel with a zinc-plated finish, this washer features an internal tooth design that bites into the mating surface and fastener head to resist loosening under load or vibration. The inside diameter measures 1.06 inches and the outside diameter measures 1.637 inches, with a thickness of 0.067 inches. It is packaged in a box of 100 pieces and is a standard component installed by electricians, plumbers, HVAC technicians, and general maintenance tradespeople across a wide range of applications.

This internal tooth lock washer is suited for use in residential and light commercial mechanical, electrical, and equipment assembly applications wherever a 1 screw size fastener is used. The zinc-plated finish provides basic corrosion resistance for indoor and sheltered environments. Typical use cases include panel assemblies, equipment mounting, conduit fittings, and general hardware fastening where positive locking action is needed at the fastener seat.

Key Features

• Internal tooth design provides positive locking action by biting into the fastener bearing surface
• Inside diameter of 1.06 inches fits 1 screw size fasteners
• Outside diameter of 1.637 inches with a thickness of 0.067 inches
• Grade 2 steel construction for standard-duty mechanical fastening
• Zinc-plated finish for basic corrosion resistance in dry or sheltered installations
• Sold in a box of 100 pieces to support production or service stock quantities

Compatibility

Designed as a standard 1 screw size internal tooth lock washer suitable for general mechanical and electrical fastening assemblies requiring an internal tooth locking washer at this diameter.

Installation Notes

Installation is performed by the appropriate licensed trade or qualified maintenance technician per the requirements of the application. De-energize or shut down equipment before servicing any fastened assembly. Seat the washer flat against the mating surface with the teeth facing the fastener head or nut bearing surface to ensure proper locking engagement. Do not reuse lock washers that have been fully compressed or show deformation, as locking effectiveness will be reduced.