Gibraltar 40771G Unequal Double Threaded Stud 1/2-13 2in

Product Description

The GIBRALTAR 40771G is an unequal double threaded stud with a 1/2-13 thread size and a 2-inch overall length. This fastener features two externally threaded ends of different lengths — a long thread end at 1 inch and a short thread end at 5/8 inch — allowing it to engage two separate components at different thread depths from a single fastener body. Made from Grade 5 carbon steel with a black oxide finish, the 40771G is suited for mechanical assemblies where a permanent or semi-permanent threaded connection is needed without a bolt head. Licensed trades and MRO professionals use this stud in brackets, flanges, and structural connections across HVAC, plumbing, and industrial equipment applications.

This stud is appropriate for light commercial and industrial mechanical assemblies requiring a reliable, headless threaded fastener. The unequal thread length design makes it practical for installations where one end threads into a tapped hole and the other accepts a nut and washer for clamping. Class 50 thread fit ensures adequate engagement tolerance for standard production and service applications.

Key Features

• Unequal thread lengths: 1-inch long end and 5/8-inch short end on a single 2-inch body
• 1/2-13 UNC thread size for broad compatibility with standard inch-fastener hardware
• Grade 5 carbon steel construction for reliable mechanical strength
• Black oxide finish provides mild corrosion resistance and reduces galling during installation
• Class 50 thread fit for consistent engagement in standard tapped holes
• No flat — fully cylindrical body for use in close-clearance or recessed mounting situations

Compatibility

Designed as a standard unequal double threaded stud for use in any assembly requiring a 1/2-13 UNC threaded fastener with a 2-inch overall length and unequal thread engagement on each end.

Installation Notes

Installation of threaded studs is typically performed by millwrights, pipefitters, or mechanical contractors using a stud driver or double-nut method. Always ensure the tapped receiving hole is clean, free of debris, and properly sized for a 1/2-13 thread before installation. Do not apply excessive torque to the stud body, as this can damage the threads or the receiving material. Verify thread class compatibility with mating hardware before assembly.