Gibraltar 40405G Double Threaded Stud 5/16-18 3.5in Oal

Product Description

The GIBRALTAR 40405G is an equal double threaded stud with a 5/16-18 thread size and an overall length of 3.5 inches. Machined from alloy steel with a black oxide finish, this stud is designed for applications where a bolt head is not practical or where a fastener must thread into two separate components from a common center point. The Class 50 thread fit and Grade 5 material rating make it suitable for moderate-strength fastening applications across HVAC, plumbing, electrical, and general mechanical assembly work.

This stud is appropriate for residential and light commercial mechanical installations where a flush or recessed fastening point is required. Tradespeople use double threaded studs when assembling equipment panels, mounting brackets, or securing components that must be removable from both sides. The equal thread configuration means both ends share the same 5/16-18 thread specification, simplifying hardware inventory on the job.

Key Features

• Equal thread design with 5/16-18 thread size on both ends
• Overall length of 3.5 inches for versatile mounting depth
• Alloy steel construction with Grade 5 material rating for moderate-strength applications
• Black oxide finish provides corrosion resistance in typical indoor mechanical environments
• Class 50 thread fit for standard assembly tolerances
• No flat — fully threaded body from end to end

Compatibility

Designed as a standard 5/16-18 double threaded stud for use in general mechanical, HVAC, plumbing, and electrical assembly applications where this thread size and overall length are specified.

Installation Notes

Installation is typically performed by a licensed mechanic, HVAC technician, or plumber using a standard stud driver or locking nut method. Always de-energize or isolate the system before fastener work on live equipment. Apply appropriate thread-locking compound or torque per the equipment manufacturer's specifications, not values from this listing. Ensure mating thread engagement depth meets the equipment manufacturer's minimum requirements.