Gibraltar KN-10SS-G Knurled Check Nut 10-24 Unc Stainless Steel

Product Description

The GIBRALTAR KN-10SS-G is a round knurled check nut machined from stainless steel and designed for use with 10-24 UNC threaded fastener assemblies. Check nuts, also called jam nuts or locknuts, serve as a secondary locking element threaded against a primary nut to resist loosening from vibration, thermal cycling, or mechanical load. This nut measures 0.25 inches overall height, with a knurled head diameter of 0.75 inches and a head height of 0.1875 inches. The base diameter is 0.5 inches with a base height of 0.0625 inches. The uncoated stainless steel construction provides corrosion resistance without added plating. Typically installed by millwrights, HVAC technicians, plumbers, or electricians wherever a secondary locking nut is required in a threaded assembly.

This check nut is suited for light-duty locking applications across residential and commercial settings. Common install scenarios include panel hardware, equipment mounting brackets, sensor fittings, valve packing glands, and any threaded rod assembly requiring a jam nut to hold a primary fastener at a fixed position. The knurled head profile allows for hand-tightening or final torque with a wrench on the flat base surfaces. The stainless steel material makes it appropriate for wet, outdoor, or corrosive environments where carbon steel fasteners would be unsuitable.

Key Features

• 10-24 UNC thread standard for broad compatibility with standard inch-series threaded components
• Round knurled head allows hand engagement and tool finishing in confined spaces
• Uncoated stainless steel construction resists corrosion without plating that can flake or wear
• Compact profile — 0.25 inches overall height — suits tight fastener stack-ups
• Functions as a secondary locking element to resist nut back-off under vibration or load

Compatibility

Designed as a standard check nut replacement for any 10-24 UNC threaded fastener assembly requiring a secondary locking nut in stainless steel.

Installation Notes

Installation is performed by threading the check nut onto the fastener shank and tightening it against the primary nut using an appropriately sized open-end or box wrench. Always de-energize equipment and depressurize systems before servicing any fastener assembly. Do not overtighten against soft seating surfaces. Stainless steel fasteners are susceptible to galling — apply an appropriate anti-seize compound to the threads before installation if repeated removal is expected.