Gibraltar ST100-40-G Double Threaded Stud 5/16-18 4 in

Product Description

The GIBRALTAR ST100-40-G is an equal double threaded stud with a 5/16-18 thread size and a 4-inch overall length (OAL). Manufactured from 1117 grade carbon steel with a black oxide finish, this stud is designed for threaded fastening applications where both ends must accept mating hardware. The equal configuration means both threaded ends are identical in length and thread specification, making it straightforward to use in symmetric assemblies. The black oxide finish provides a degree of corrosion resistance and reduces light reflection in service environments. This fastener is installed by mechanical trades, maintenance technicians, and industrial assembly professionals.

This double threaded stud is suited for general mechanical assembly, equipment mounting, and structural fastening tasks across residential, commercial, and light industrial settings. Its 5/16-18 unified coarse thread pattern is widely compatible with standard nuts and tapped holes, making it a common choice for HVAC equipment mounting, plumbing fixture installation, and general trade maintenance applications where a stud fastener is preferred over a conventional bolt.

Key Features

• Equal double threaded design with identical thread spec on both ends for symmetric fastening
• 5/16-18 unified coarse thread for broad hardware compatibility
• 4-inch overall length suitable for standard assembly stack-ups
• 1117 grade carbon steel construction for reliable mechanical strength
• Black oxide finish for mild corrosion resistance and reduced reflectivity
• Left and right thread direction coverage for versatile installation orientations

Compatibility

Designed for use with standard 5/16-18 threaded nuts, couplings, and tapped components in general mechanical and trade fastening applications.

Installation Notes

Installation is typically performed by mechanical, HVAC, or plumbing technicians using standard hand tools or a stud driver. Ensure the receiving tapped hole or nut is clean and free of debris before threading the stud in. De-energize and isolate any associated equipment before performing fastener work in live systems. Do not exceed the rated load capacity of the stud by over-torquing mating hardware.