Gibraltar 40403G Equal Double Threaded Stud 5/16-18 Alloy Steel

Product Description

The GIBRALTAR 40403G is an equal double threaded stud with a 5/16-18 thread size and an overall length of 2.5 inches. This stud features identical threads on both ends, allowing it to anchor into a tapped hole on one end while accepting a nut or fitting on the other. Constructed from alloy steel with a black oxide finish and rated at material grade 5, it delivers solid mechanical strength in standard fastener applications. The black oxide coating provides mild corrosion resistance and reduces light reflection in finished assemblies. Tradespeople and maintenance technicians across HVAC, plumbing, electrical, and general mechanical work reach for this stud when a permanent or semi-permanent male thread connection is needed at both ends of a single fastener.

This double threaded stud suits residential and light commercial applications where a reliable threaded connection is required between two components or where a threaded insert is not practical. Common uses include equipment mounting, bracket attachment, motor and component fastening, and structural assembly work where a bolt-through configuration is not possible. The 5/16-18 coarse thread is a widely used size in HVAC equipment panels, pump housings, and electrical enclosures, making this stud a practical general-purpose fastener for service and installation work.

Key Features

• Equal double threaded design with identical 5/16-18 threads on both ends
• 2.5-inch overall length suits standard equipment fastening applications
• Alloy steel construction at material grade 5 for reliable tensile strength
• Black oxide finish provides mild corrosion resistance and low-glare surface
• Thread fit class 50 for consistent engagement in standard tapped holes
• No flat ground on shank, maintaining full cylindrical profile along the body

Compatibility

Designed as a general-purpose replacement or service stud for applications requiring a 5/16-18 equal double threaded fastener in alloy steel construction.

Installation Notes

Install and remove using a stud driver or two jam nuts tightened against each other on the exposed thread end. Power down or de-energize any equipment before accessing fastener locations inside electrical enclosures or mechanical assemblies. Follow applicable torque guidelines from the equipment manufacturer for the 5/16-18 thread class used. Inspect threaded holes for damage or cross-threading before installation to ensure proper engagement and load distribution.