Gibraltar 40778G Unequal Double Threaded Stud 1/2-13 7 in

Product Description

The GIBRALTAR 40778G is an unequal double threaded stud with a 1/2-13 thread size and a 7-inch overall length. It is machined from carbon steel with a black oxide finish, providing corrosion resistance in moderate service environments. The stud features an unequal thread configuration: a long thread length of 2 inches on one end and a short thread length of 0.75 inches on the other. Grade 5 material meets standard strength requirements for structural and mechanical fastening applications. This type of stud is installed by maintenance technicians, millwrights, and mechanical contractors in equipment assembly and fabrication work.

Unequal double threaded studs like the 40778G are used in applications where two different thread engagement depths are required on opposing ends of a single fastener. Common uses include bolting flanges, mounting brackets, and securing machine components where a bolt-through design is not practical. The short end typically threads into a tapped hole in a fixed component, while the long end accepts a nut for clamping. This part is suited for general industrial, HVAC equipment, and mechanical assembly work.

Key Features

• Unequal thread design: 2-inch long thread and 0.75-inch short thread for varied engagement depth
• 1/2-13 thread size for compatibility with standard UNC fastener hardware
• Carbon steel construction with Grade 5 material rating for reliable tensile strength
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Thread Fit Class 5 for standard tolerance mechanical assemblies
• No flat ground on shank, suitable for applications that do not require wrench engagement on the body

Compatibility

Designed as an OEM-style replacement or direct-fit stud for mechanical and industrial assemblies requiring a 1/2-13 unequal double threaded stud with a 7-inch overall length.

Installation Notes

Installation is performed by qualified mechanical technicians or millwrights using standard hand tools and torque wrenches. De-energize and lock out all equipment before fastener replacement or installation. Thread the short end into the tapped receiving hole to the appropriate engagement depth before securing the mating component with a nut on the long end. Follow applicable mechanical codes and equipment manufacturer torque guidelines for the assembly.