3/8 UNF LOCK NUT (JAM NUT)

Lock Nut 3/8" UNF Zinc Plated (Jam Nut)

This 3/8" UNF lock nut, commonly referred to as a jam nut, is designed for use as a secondary locking nut to prevent fasteners from loosening in service. Its reduced thickness allows it to be tightened against a standard nut, creating a locking effect that helps maintain clamp load in high-vibration environments.

Manufactured from steel and finished with a zinc-plated coating, this jam nut provides good corrosion resistance and durability for motorsport, automotive and fabrication applications. The fine-thread UNF design offers increased thread engagement accuracy and is well suited to steering, suspension, chassis and linkage assemblies where secure adjustment is required.

An essential workshop fastener for locking threaded components in position without the need for additional locking hardware.

Specifications

• Thread Size: 3/8" UNF
• Type: Lock Nut (Jam Nut)
• Material: Steel
• Finish: Zinc Plated
• Thread Form: UNF Fine Thread
• Low Profile Design
• Suitable for Locking and Adjustment Applications
• SKU: 43005