Gibraltar 40553G Unequal Double Threaded Stud 3/8-16 4 in

Product Description

The GIBRALTAR 40553G is an unequal double threaded stud with a 3/8-16 thread size and a 4-inch overall length. It features two threaded ends of different lengths: a long thread of 1.5 inches and a short thread of 0.625 inches, with an unthreaded shank between them. Manufactured from Grade 5 carbon steel with a black oxide finish, this stud is suited for mechanical fastening applications where a permanent or semi-permanent threaded connection is required at both ends of a joint. Installation is typically performed by trades working with structural or mechanical assemblies that require through-bolting or stud-mounted components.

This double threaded stud is used in mechanical, HVAC, plumbing, and general industrial assembly applications where a fixed stud is needed to join two components. The unequal thread lengths allow one end to thread deeply into a tapped hole or nut while the shorter end accepts a standard fastener from the opposite side. It is appropriate for use in equipment mounting, pipe support brackets, and similar trade applications requiring a reliable threaded fastener in tight or fixed-clearance installations.

Key Features

• 3/8-16 thread size with unequal end lengths: 1.5 inches long thread, 0.625 inches short thread
• 4-inch overall length for installations requiring longer stud reach
• Grade 5 carbon steel construction for strength in mechanical fastening applications
• Black oxide finish provides moderate corrosion resistance and reduces light reflection
• Thread Fit Class 50 for standard fastener compatibility
• No flat ground on shank, maintaining full round cross-section for torque-free installation reference

Compatibility

Designed as a standard replacement or new-installation threaded stud for mechanical and trade assemblies using 3/8-16 inch threaded fasteners. Confirm tapped hole depth and mating nut specification before installation.

Installation Notes

Installation is performed by mechanics, HVAC technicians, plumbers, or general tradespeople working with threaded fastener assemblies. Ensure mating tapped holes or nuts match the 3/8-16 thread specification before installing. De-energize and depressurize any system before fastener work on live equipment. Use appropriate thread engagement depth for the application to maintain rated load capacity.