Value Collection R83920102 Split Lock Washer 18-8 Ss

Product Description

The VALUE COLLECTION R83920102 is a Number 12 screw split lock washer made from 18-8 stainless steel. Split lock washers are used under fastener heads or nuts to resist loosening caused by vibration and torque. The helical split design bites into both the fastener bearing surface and the mating material, maintaining clamp load over time. The 18-8 stainless steel construction provides corrosion resistance suitable for indoor and outdoor applications where moisture or mild chemicals may be present. This washer has an inside diameter ranging from 0.220 to 0.227 inches and an outside diameter ranging from 0.219 to 0.377 inches, with a thickness of 0.056 inches.

This split lock washer is sized for Number 12 screws and is used across a wide range of trade applications including HVAC equipment assembly, electrical panel and enclosure work, plumbing fixture mounting, and general mechanical fastening. It is appropriate for both light commercial and residential installations where a standard inch-system fastener is specified. Installers working on sheet metal assemblies, control boxes, or equipment mounting brackets commonly use this size. The stainless steel grade is well suited for environments where carbon steel hardware would corrode prematurely.

Key Features

• 18-8 stainless steel construction for corrosion resistance in wet or chemically exposed environments
• Helical split design resists fastener loosening under vibration and dynamic loads
• Inside diameter range of 0.220 to 0.227 inches for Number 12 screw fitment
• Outside diameter range of 0.219 to 0.377 inches
• Thickness of 0.056 inches for consistent clamp load
• Inch measurement system; does not meet military specifications

Compatibility

Designed for use with Number 12 inch-system screws in standard fastening applications across HVAC, electrical, plumbing, and mechanical assembly work.

Installation Notes

Install this washer between the fastener head or nut and the mating surface, with the split gap positioned so the washer can flex and seat fully as the fastener is torqued. Ensure the mating surface is clean and free of debris before assembly. This is a general hardware component installed by any trade working with Number 12 fasteners; no special licensing is required. Always de-energize or shut off any system before performing mechanical work on energized or pressurized equipment.