Gibraltar 40404G Double Threaded Stud 5/16-18 3 in Alloy Steel

Product Description

The GIBRALTAR 40404G is an equal double threaded stud with a 5/16-18 thread size and an overall length of 3 inches. This stud is manufactured from alloy steel with a black oxide finish and meets Material Grade 5 standards. Thread fit is Class 50, providing a consistent and reliable thread engagement on both ends. Double threaded studs are used in mechanical assemblies where a bolt cannot be passed through or rotated, allowing components to be drawn together or secured from both sides. Installation is performed by trade professionals including HVAC technicians, plumbers, electricians, and mechanical contractors working on equipment assemblies and structural fastening applications.

This stud is suited for use in residential and light commercial mechanical assemblies where an equal-length double end threaded fastener is required. The black oxide finish provides mild corrosion resistance in interior or low-exposure environments. The equal thread configuration means both ends carry the same 5/16-18 thread, making it suitable for symmetrical clamping or mounting applications in equipment brackets, motor mounts, and similar hardware installations.

Key Features

• Equal double threaded configuration with 5/16-18 thread on both ends
• Overall length of 3 inches for standard fastening depth applications
• Alloy steel construction with Material Grade 5 rating for reliable tensile strength
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Class 50 thread fit for consistent thread engagement
• No flat ground — round shank profile throughout

Compatibility

Designed as a standard 5/16-18 equal double threaded stud for use in mechanical assemblies, equipment brackets, and hardware installations requiring a Grade 5 alloy steel fastener with black oxide finish.

Installation Notes

Installation is typically performed by a licensed mechanic, HVAC technician, or electrician as part of equipment assembly or component mounting. De-energize and lock out all equipment before working in the fastener area. Use the appropriate thread-engaging tool or stud installer to avoid cross-threading. Do not overtighten — consult the equipment manufacturer torque specifications for the mating assembly.