Gibraltar 40555G Unequal Double Threaded Stud 3/8-16 6 in

Product Description

The GIBRALTAR 40555G is an unequal double threaded stud with a 3/8-16 thread size and a 6-inch overall length. It features two threaded sections of different lengths: a long thread of 2 inches and a short thread of 0.63 inches. The body is machined from Grade 5 carbon steel and finished in black oxide for corrosion resistance. This type of stud is a standard fastener used to join components where a bolt cannot be passed through from one side, or where a fixed threaded post is needed in a tapped bore. Tradespeople and maintenance technicians working in mechanical, HVAC, and industrial equipment environments commonly install this hardware.

This stud is suited for mechanical assemblies, equipment mounting, and structural fastening applications in both residential and commercial settings. The 3/8-16 thread size is a common coarse-thread specification found in a wide range of equipment frames, brackets, and machinery. The unequal thread lengths make it practical for applications where one end threads permanently into a tapped hole while the other end accepts a nut for clamping or attachment of secondary components.

Key Features

• 3/8-16 coarse thread on both ends for broad compatibility with standard tapped holes and nuts
• Unequal thread lengths: 2-inch long thread and 0.63-inch short thread for versatile installation configurations
• 6-inch overall length suits medium-depth clamping and mounting assemblies
• Grade 5 carbon steel construction for reliable tensile strength in mechanical applications
• Black oxide finish provides mild corrosion resistance and reduces light reflection in service environments
• Thread Fit Class 5 for standard tolerance mating with commercial-grade threaded components

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies requiring a 3/8-16 unequal double threaded stud with a 6-inch overall length.

Installation Notes

Installation of double threaded studs is performed by threading the short end into a tapped bore using a stud driver or double-nut method, then securing the mating component on the long thread end with an appropriate nut and washer. De-energize and lock out any equipment before replacing fasteners in live assemblies. Apply thread-locking compound or anti-seize as required by the equipment manufacturer's service documentation. Torque the retaining nut to the specification listed in the applicable service manual for the fastener grade and thread size.