Gibraltar 40776G Unequal Double Threaded Stud 1/2-13 6 in

Product Description

The GIBRALTAR 40776G is an unequal double threaded stud with a 1/2-13 UNC thread profile and a 6-inch overall length. This fastener features two threaded ends of different lengths — a 2-inch long thread on one end and a 1-3/4-inch short thread on the other — with an unthreaded shank section in between. Constructed from Grade 5 carbon steel with a black oxide finish, the 40776G suits structural and mechanical fastening applications where a stud must be anchored into one component while accepting a nut on the opposite end. Thread Fit Class 5 indicates a close-tolerance fit appropriate for general industrial use. Licensed fastener technicians and maintenance trades installers are the typical end users.

This stud is suited for use in mechanical assemblies, HVAC equipment frames, industrial machinery, and structural bracketing where a fixed threaded anchor point is required. The unequal thread lengths allow one end to be set permanently into a tapped hole or coupling while the protruding end accepts a standard hex nut for component attachment. The black oxide finish provides mild corrosion resistance in dry or lightly oiled indoor environments. Typical applications include equipment mounting, vibration-isolated panel assemblies, and general mechanical fastening in both commercial and light industrial settings.

Key Features

• Unequal thread ends: 2-inch long thread and 1-3/4-inch short thread on a single 6-inch stud
• 1/2-13 UNC thread size for compatibility with standard inch-series hardware
• Grade 5 carbon steel construction for reliable tensile and shear strength
• Black oxide finish for mild corrosion resistance in interior or low-moisture environments
• Thread Fit Class 5 ensures close-tolerance engagement for secure assembly
• No flat on the shank — designed for torque applied at the threaded ends only

Compatibility

Designed for use with standard 1/2-13 UNC inch-series hex nuts, coupling nuts, and tapped holes in carbon steel, cast iron, or similar structural materials.

Installation Notes

Installation is typically performed by maintenance technicians or mechanical trades using standard open-end, box, or socket wrenches. Thread the long end into the receiving tapped hole or coupling before securing the mating component on the short-thread end. Power down and de-energize any associated equipment before fastener service on live assemblies. Do not use impact tools on the unthreaded shank section, as this may damage the thread runout.