Gibraltar ST3-40-G Double Threaded Stud 5/8-11 4 in

Product Description

The GIBRALTAR ST3-40-G is an equal double threaded stud designed for applications that require threaded fastening on both ends with no unthreaded shank. The stud measures 4 inches overall length and is machined to a 5/8-11 UNC thread specification with both left-hand and right-hand thread directions. Constructed from 1117 carbon steel with a black oxide finish, it provides moderate corrosion resistance in dry or lightly protected environments. This type of fastener is commonly installed by millwrights, pipefitters, and general maintenance mechanics in structural, mechanical, and industrial assembly work.

This equal double threaded stud suits applications where a bolt cannot be passed through from one side, or where a permanent stud is required for repeated assembly and disassembly. It is appropriate for use in light industrial machinery, equipment frames, and fixture mounting. The 5/8-11 thread size makes it compatible with standard SAE and inch-dimensioned hardware in a wide range of mechanical and structural assemblies. Individual packaging makes it suitable for single-unit replacement jobs as well as inventory replenishment.

Key Features

• Equal-length threaded ends on both sides with no plain shank
• 5/8-11 UNC thread form on both ends
• Left and right thread direction for secure engagement
• 1117 carbon steel construction for reliable mechanical strength
• Black oxide finish provides mild corrosion and oxidation resistance
• 4 inch overall length suits common mid-range fastening depths

Compatibility

Designed as an OEM-style replacement or stock fastener for mechanical assemblies requiring a 5/8-11 UNC equal double threaded stud at 4 inches overall length.

Installation Notes

Installation is typically performed by a millwright, maintenance mechanic, or pipefitter using appropriately sized stud installation tools or two jam nuts to drive the stud into a tapped hole. Ensure the receiving threads are clean and free of damage before installation. Torque to the fastener specification required by the equipment manufacturer. Inspect the black oxide finish for any breaches that may accelerate corrosion in wet or high-humidity environments.