Value Collection MPA996272 Left Hand Hex Jam Nut 3/4-16 Unf

Product Description

The VALUE COLLECTION MPA996272 is a left-hand threaded hex jam nut designed for 3/4-16 UNF threaded fastener applications. Manufactured from steel with a zinc clear finish, this jam nut measures 1.125 inches across the flats and 0.4219 inches in height. Its left-hand thread direction makes it the correct choice for applications where standard right-hand nuts would loosen under rotational forces or where assembly design requires reverse-thread hardware. Machinists, millwrights, maintenance technicians, and trade professionals working with specialized mechanical assemblies typically install this type of fastener.

Left-hand hex jam nuts see use in mechanical drive systems, rotating shaft assemblies, and any installation where counter-rotation of a component could cause a standard right-hand nut to back off. This nut fits standard 3/4-16 UNF threaded rod, bolts, or studs that carry a left-hand thread designation. It serves both industrial and commercial maintenance applications where thin profile and reverse-thread locking are required simultaneously.

Key Features

• Left-hand thread direction prevents loosening in counter-rotating assemblies
• 3/4-16 UNF thread standard for precise, fine-pitch engagement
• Steel construction provides solid mechanical strength
• Zinc clear finish offers basic corrosion resistance
• Jam nut profile at 0.4219 inches height for low-clearance installations
• 1.125 inches across flats fits standard hex tooling

Compatibility

Designed for use with 3/4-16 UNF left-hand threaded fasteners including rods, bolts, and studs requiring a thin hex jam nut with reverse-thread engagement.

Installation Notes

Installation requires a wrench sized for 1.125 inches across flats and confirmation that the mating fastener carries a left-hand thread designation before assembly. Power down or de-energize any equipment before servicing fastener assemblies in mechanical systems. Jam nuts are typically torqued against a primary nut or shoulder to lock position — do not substitute this nut for a full-height structural nut where load-bearing specifications require one.