Hillman Fasteners 830670 3/8 Inch Ss Split Lock Washer 100 Pack

Product Description

The HILLMAN FASTENERS 830670 is a 3/8 inch stainless steel medium split lock washer sold in a 100-piece pack. Split lock washers are designed to resist loosening caused by vibration and torque relaxation. The split in the washer bites into the bearing surface and the fastener head, maintaining clamp load over time. Stainless steel construction provides corrosion resistance in wet, outdoor, and chemical-exposure environments. This type of washer is a standard component in mechanical assemblies across plumbing, HVAC, electrical, and general construction applications.

These lock washers are suited for residential and commercial installations where corrosion resistance and reliable fastener retention are required. Common applications include pipe hangers, equipment mounting, electrical panel work, and outdoor structural connections. The 3/8 inch inner diameter is compatible with 3/8 inch bolts and machine screws. The 100-piece pack format is practical for service contractors and tradespeople who stock hardware in bulk for job-site use.

Key Features

• Stainless steel construction resists rust and corrosion in wet and outdoor environments
• Medium split design maintains clamp load by biting into mating surfaces under torque
• 3/8 inch inner diameter fits standard 3/8 inch fasteners
• 100-piece pack reduces restocking frequency for high-volume users
• Suitable for use across HVAC, plumbing, electrical, and general mechanical applications

Compatibility

Designed as a standard 3/8 inch medium split lock washer for use with 3/8 inch bolts and machine screws in general mechanical and trade installations.

Installation Notes

Installation is performed by placing the lock washer between the fastener head or nut and the bearing surface before tightening. Ensure the mating surface is clean and free of debris so the washer seats and bites properly. Follow applicable torque guidelines for the fastener grade and application. When working on energized electrical equipment or pressurized systems, de-energize or depressurize before beginning work.