Gibraltar 40853G Unequal Double Threaded Stud 5/8-11 4 in

Product Description

The GIBRALTAR 40853G is an unequal double threaded stud designed for fastening applications that require different thread engagement lengths on each end. It features a 5/8-11 thread size with an overall length of 4 inches. The long end provides 1.75 inches of thread engagement, while the short end provides 0.875 inches. Constructed from Grade 5 carbon steel with a black oxide finish, the 40853G delivers solid mechanical strength and moderate corrosion resistance in a compact, weldless fastener format. It is installed by machinists, millwrights, and maintenance technicians working in structural, mechanical, or industrial assembly applications.

The 40853G is suited for industrial and commercial mechanical assemblies where a fixed stud must thread into a tapped hole on one end and accept a nut or threaded component on the other. The unequal thread length configuration is common in pump flanges, motor mounts, pipe flanges, machinery bases, and equipment panels where the engagement depth on each side differs by design. Thread fit is Class 5, indicating a tight interference-to-transition fit appropriate for permanent or semi-permanent installations.

Key Features

• 5/8-11 UNC thread size on both ends for standard inch-series fastener compatibility
• Unequal thread lengths: 1.75 inches on the long end, 0.875 inches on the short end
• Grade 5 carbon steel construction for reliable tensile and yield strength
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Class 5 thread fit for tight, interference-style engagement
• No flat ground on the shank, maintaining full cylindrical body profile

Compatibility

Designed as a standard inch-series double-end threaded stud for use in any application requiring 5/8-11 UNC thread engagement on both ends. Consult assembly drawings to confirm required engagement depth before installation.

Installation Notes

Double threaded studs are typically installed by machinists or maintenance mechanics using a stud driver or two-nut method to thread the short end into a tapped hole to the appropriate depth. Power down or de-energize all equipment before working on mechanical assemblies. Apply appropriate thread-locking compound or anti-seize as specified by the equipment manufacturer. Follow applicable ASME or OSHA fastener standards for torque and installation procedures.