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The VALUE COLLECTION C52000652 is a 9/16-12 UNC hex jam nut manufactured from stainless steel with a right-hand thread direction. Hex jam nuts are thin, low-profile nuts used to lock a standard nut in place on a threaded fastener, preventing loosening from vibration or torque. This nut measures 7/16 inches across the flats and stands 5/16 inches high. Stainless steel construction provides corrosion resistance in wet, outdoor, or chemically exposed environments. This listing includes a package of 50 nuts, making it suitable for production assembly, maintenance shops, or service work requiring multiple fasteners on hand.
This hex jam nut is used across mechanical, structural, and industrial applications wherever a 9/16-12 UNC threaded fastener requires a locking or jamming element. Common installation scenarios include equipment mounting hardware, plumbing fixture locknut applications, HVAC equipment brackets, and general mechanical assemblies. The stainless steel material makes it a practical choice for corrosive or outdoor environments where carbon steel fasteners would be prone to rust or oxidation.
Designed for use with 9/16-12 UNC threaded fasteners in standard right-hand thread assemblies across mechanical, structural, and industrial applications.
Hex jam nuts are typically installed by mechanics or maintenance technicians using an open-end or combination wrench sized to the 7/16-inch flat dimension. To jam-lock the assembly, thread the jam nut against a standard nut and hold the standard nut stationary while tightening the jam nut against it. Always de-energize or depressurize any equipment before servicing threaded fasteners in live systems. Confirm thread engagement and seating before returning the assembly to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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