Jack Screw 1in-8 UNC 11in OAL

The Jack Screw 1in-8 UNC 11in OAL from WEHRS MACHINE is a heavy-duty mechanical lifting and assembly fastener engineered for industrial, automotive, and equipment repair applications. This 11-inch jack bolt serves as a critical component in gear pullers, hydraulic press setups, and machinery adjustment systems where precise vertical force distribution and load support are essential. Built for professionals and technicians who demand reliability under sustained pressure, this screw delivers the mechanical advantage needed to safely lift, align, or separate components without risk of slippage or deformation.

Manufactured from steel and finished with a durable black powder coat, the Jack Screw 1in-8 UNC 11in OAL features a 1-inch diameter shaft with a standard UNC (Unified National Coarse) 8 threads-per-inch pitch, enabling smooth, controlled advancement and load engagement. The 11-inch overall length accommodates deeper housings and larger assembly gaps, while the 1-inch-8 thread specification ensures compatibility with standard metric and SAE porting in most industrial press frames and puller bodies. The black powder coat protects against rust and corrosion during storage and field use, extending service life in workshop and outdoor environments. Weighing 2.13 pounds, it maintains structural integrity under high radial and axial loads typical of gear extraction and alignment work.

Technicians, machine shops, and DIY enthusiasts working with gearboxes, bearing pullers, and press assemblies will find this jack bolt indispensable for safely applying concentrated force. It pairs seamlessly with standard puller frames, arbor presses, and custom lifting fixtures that accept 1-8 UNC threads. Installation is straightforward—simply thread the screw into the receiving nut or body, then rotate the handle or apply torque to generate controlled upward force. For optimal performance, inspect threads regularly for damage and ensure the mating surface is clean and free of debris before each use.