Gibraltar 40777G Unequal Double Threaded Stud 1/2-13 6.5in

Product Description

The GIBRALTAR 40777G is an unequal double threaded stud with a 1/2-13 thread size and an overall length of 6.5 inches. Double threaded studs feature threading on both ends with an unthreaded shank in the middle, allowing two separate components to be fastened at a fixed center distance. This stud is manufactured from Grade 5 carbon steel with a black oxide finish that provides moderate corrosion resistance. The long thread measures 2 inches and the short thread measures 0.75 inches, making the engagement lengths unequal. It is commonly installed by millwrights, maintenance technicians, and general contractors in mechanical assemblies, machinery mounts, and structural connections.

This stud is suited for industrial and commercial fastening applications where a fixed threaded insert is required on both ends of a connection. Typical use cases include equipment mounting, flange connections, and fabricated steel assemblies requiring a non-rotating fastener. The 1/2-13 thread is a standard Unified Coarse thread widely used in structural and mechanical fastening. The black oxide finish is appropriate for indoor or protected installations where light corrosion resistance is acceptable.

Key Features

• Unequal thread lengths: 2-inch long thread and 0.75-inch short thread
• 1/2-13 Unified Coarse thread on both ends
• Grade 5 carbon steel construction for tensile strength in mechanical fastening
• Black oxide finish provides light corrosion resistance and reduces light reflection
• Thread Fit Class 5 for standard tolerance mechanical assemblies
• No flat ground on the shank, maintaining full round cross-section

Compatibility

Designed as an OEM-style replacement or standard fastener component for mechanical assemblies requiring a 1/2-13 unequal double threaded stud with a 6.5-inch overall length.

Installation Notes

Installation is typically performed by a millwright, maintenance mechanic, or qualified technician. Shut down and de-energize any equipment before installing or replacing fasteners in mechanical assemblies. Use appropriate thread locking compound or torque procedures per the equipment manufacturer specifications. Verify thread engagement depth on both ends meets the requirements of the connected components before final assembly.