Gibraltar ST2-40-G Double Threaded Stud 1/2-13 4 in

Product Description

The GIBRALTAR ST2-40-G is an equal double threaded stud with a 1/2-13 thread size and a 4 inch overall length. This stud features left and right hand threading at each end, allowing it to serve as a fixed fastener in assemblies where a bolt head is not practical or permitted. Constructed from grade 1117 carbon steel with a black oxide finish, it provides adequate corrosion resistance for general indoor mechanical and industrial applications. Licensed tradespeople in HVAC, plumbing, and mechanical construction install this type of stud where two components must be joined end-to-end or where one end threads into a tapped hole and the other accepts a nut.

This stud is suited for use in equipment mounting, structural bracketing, and mechanical assembly work across residential and light commercial applications. It is commonly used by HVAC technicians and pipefitters when securing equipment bases, mounting plates, or flanged components that require a double-ended fastener. The 1/2-13 UNC thread is one of the most common coarse-thread profiles in trade work, making this stud a practical general-purpose fastener for a range of service and installation scenarios.

Key Features

• Equal double threaded design with left and right hand thread direction on each end
• 1/2-13 UNC coarse thread profile for broad compatibility with standard nuts and tapped holes
• 4 inch overall length suits medium-depth mounting and assembly applications
• Grade 1117 carbon steel construction provides reliable mechanical strength
• Black oxide finish reduces surface oxidation for general-purpose indoor use

Compatibility

Designed as a general-purpose equal double threaded stud for use in mechanical assemblies, equipment mounting, and structural fastening applications requiring a 1/2-13 coarse thread and 4 inch overall length.

Installation Notes

Installation is typically performed by HVAC technicians, pipefitters, or mechanical contractors using standard hand tools. Ensure the receiving tapped hole is clean and free of debris before threading the stud in. De-energize and lock out any equipment before performing fastener work on live assemblies. Follow applicable mechanical codes for torque and fastener selection in structural or pressure-bearing applications.