Stewart Fastener J37WLZ 3/8 Inch Zinc Lock Washers 100 Count

Product Description

The STEWART FASTENER J37WLZ is a jar of 100 zinc-plated 3/8 inch split lock washers designed for general mechanical and structural fastening applications. Lock washers create tension under bolt heads and nuts to resist loosening caused by vibration and torque cycling. The zinc plating provides baseline corrosion resistance suitable for indoor and sheltered outdoor installations. These are a standard consumable used by HVAC technicians, plumbers, electricians, and general mechanical contractors when securing equipment, brackets, and structural components.

The J37WLZ is suited for residential and light commercial trade work where 3/8 inch fastener hardware is required. Common applications include equipment mounting, electrical panel and conduit support, pipe hanger assemblies, and HVAC unit brackets. The jar packaging keeps fasteners organized on the job site and simplifies inventory management for service vans and shop stock.

Key Features

• 3/8 inch split lock washer profile resists bolt and nut loosening under vibration
• Zinc plating provides corrosion resistance for indoor and sheltered installations
• Jar of 100 count supports bulk use across multiple jobs
• Standard split-ring design compatible with 3/8 inch fastener hardware

Compatibility

Designed for use with 3/8 inch bolts, screws, and nuts in standard mechanical, HVAC, plumbing, and electrical fastening applications.

Installation Notes

Lock washers are installed between the fastener head or nut and the mating surface before torquing. Ensure the fastener and mating material are compatible with zinc-plated hardware to avoid galvanic corrosion concerns. Follow applicable installation codes such as NEC or IFGC for fastener requirements in electrical or gas equipment applications.

Technical Specifications

• Size: 3/8 inch
• Finish: Zinc Plated
• Type: Split Lock Washer
• Quantity per Jar: 100
• UPC: 662352112703

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: J37WLZ