Gibraltar 40358G Unequal Double Threaded Stud 1/4-20 8in Oal

Product Description

The GIBRALTAR 40358G is an unequal double threaded stud designed for mechanical fastening applications where two different thread engagement lengths are required on a single fastener. Made from Grade 5 carbon steel with a black oxide finish, this stud measures 8 inches overall length with a 2.5-inch long thread on one end and a 0.38-inch short thread on the opposite end. The 1/4-20 thread size and Class 5 thread fit make it suitable for precise, load-bearing connections. Licensed trades including HVAC technicians, plumbers, and industrial mechanics install double threaded studs when mounting components to panels, frames, or equipment housings where a bolt cannot pass through.

This stud is suited for residential and light commercial mechanical installations, including HVAC equipment mounting, plumbing fixture anchorage, and general industrial assembly. The unequal thread configuration allows one end to be permanently set into a tapped hole or material while the other end accepts a nut or threaded fitting. The black oxide finish provides moderate corrosion resistance in dry indoor environments.

Key Features

• Unequal thread configuration: 2.5-inch long thread and 0.38-inch short thread on opposite ends
• 1/4-20 thread size with Class 5 thread fit for controlled engagement tolerance
• Grade 5 carbon steel construction for reliable tensile strength
• Black oxide finish for mild corrosion resistance in indoor applications
• 8-inch overall length accommodates deeper standoff or panel thickness requirements
• No flat section — fully threaded on both engagement ends

Compatibility

Designed as a standard 1/4-20 unequal double threaded stud for use in any application requiring a 1/4-20 thread engagement, including HVAC equipment frames, plumbing component mounting, and general mechanical assemblies accepting Grade 5 carbon steel fasteners.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or millwrights using standard hand tools and a thread engagement gauge where required. Power down or de-energize all connected equipment before installing or removing studs in electrical or HVAC enclosures. Apply thread-locking compound or torque to the installer's equipment specifications — no specific torque value is provided by the manufacturer for this fastener. Follow applicable codes including IFGC or IPC for mechanical fastening in plumbing and gas equipment installations.