Gibraltar 40409G Double Threaded Stud 5/16-18 5.5 in

Product Description

The GIBRALTAR 40409G is an equal double threaded stud with a 5/16-18 thread size and an overall length of 5.5 inches. Manufactured from alloy steel with a black oxide finish, it meets Grade 5 material standards and a Thread Fit Class 50 specification. This stud is designed for use in mechanical assemblies where a fastener must engage two separate threaded components simultaneously, such as studs threaded into a housing on one end and secured with a nut on the other. Electricians, plumbers, HVAC technicians, and millwrights install these in a wide range of structural and mechanical fastening applications.

This equal double threaded stud is suited for general industrial and trade applications requiring a reliable, corrosion-resistant fastener. The black oxide finish provides moderate surface protection and reduces galling during installation. It is appropriate for use in residential, commercial, and light industrial assemblies wherever a fixed stud is needed in place of a conventional bolt. No flat is included on this stud, so installation requires thread engagement at both ends without a wrench flat interface.

Key Features

• Equal double threaded design allows engagement on both ends with the same 5/16-18 thread pitch
• Alloy steel construction with Grade 5 material rating for reliable tensile strength
• Black oxide finish provides surface protection and a clean appearance
• Thread Fit Class 50 ensures consistent thread engagement tolerances
• 5.5-inch overall length accommodates a range of fastening depths
• No flat design — thread engagement required on both ends for installation

Compatibility

Designed as an OEM-style replacement or new-installation fastener for mechanical assemblies requiring a 5/16-18 equal double threaded stud in alloy steel.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with threaded fastener assemblies. Ensure mating threaded holes are clean and free of debris before installation. A thread-locking compound may be appropriate depending on the application and vibration environment. Do not exceed the torque capacity appropriate for a Grade 5 5/16-18 alloy steel stud as specified in your assembly documentation.