Gibraltar 40779G Unequal Double Threaded Stud 1/2-13 8 in

Product Description

The GIBRALTAR 40779G is an unequal double threaded stud designed for bolted connections where different thread engagement lengths are required on each end. Machined from Grade 5 carbon steel with a black oxide finish, this stud offers corrosion resistance and the mechanical strength needed for structural and mechanical assembly applications. It carries a Thread Fit Class 5 designation and measures 8 inches in overall length, with a long thread end of 2.5 inches and a short thread end of 0.75 inches. Machinists, millwrights, pipefitters, and general contractors install these studs in framing, equipment mounting, and structural fastening work where a standard bolt cannot be used.

This stud is suited for use in industrial, commercial, and light structural applications where 1/2-13 UNC threaded connections are specified. The unequal thread length configuration makes it practical for through-bolting into tapped holes on one side while securing a nut or flange on the opposite end. Typical scenarios include equipment base plate mounting, pipe support attachment, and general mechanical assembly where a fixed threaded anchor point is needed.

Key Features

• 1/2-13 UNC thread size on both ends for standard fastener compatibility
• Unequal thread configuration: 2.5-inch long thread end and 0.75-inch short thread end
• Grade 5 carbon steel construction for reliable tensile strength in structural applications
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Thread Fit Class 5 for consistent fit with standard 1/2-13 nuts and tapped holes
• No flat — round body profile suited for through-hole and tapped installations

Compatibility

Designed for use with standard 1/2-13 UNC nuts, washers, and tapped components in mechanical and structural assemblies requiring an unequal double threaded stud.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using standard hand tools and thread-locking compound where vibration is a concern. De-energize and de-pressurize any equipment before replacing or installing studs in live systems. Apply appropriate torque using a calibrated torque wrench in accordance with relevant fastener standards and the equipment manufacturer's specifications. Inspect threads on both the stud and mating components for damage before assembly.