Jack Bolt Sleeve 1-1/8in-12

The Jack Bolt Sleeve 1-1/8in-12 is a precision fastening component engineered for heavy-duty automotive and mechanical assembly applications. Manufactured by Allstar Performance, this steel jack bolt sleeve serves as a critical retention element in suspension systems, frame assemblies, and specialized rigging operations where secure, repeatable clamping force is non-negotiable. Professionals in motorsports, fabrication shops, and industrial maintenance environments depend on jack bolt sleeves to maintain structural integrity under extreme vibration and load cycling.

Constructed from hardened steel in its natural finish, the Jack Bolt Sleeve 1-1/8in-12 features a 1-1/8-inch thread diameter with a 12-pitch thread specification, a 2-inch overall length, and a 1-3/8-inch outer diameter that provides ample surface contact and load distribution. The sleeve design allows the jack bolt to function as a controlled spacer and load spreader, preventing galling and protecting underlying components from direct bolt head pressure. At 0.36 pounds and measuring 4 x 1.45 x 7 inches, this compact yet robust component integrates seamlessly into tight spaces while maintaining the mechanical advantage required for consistent clamping torque application.

Technicians working on frame jigs, adjustable suspension mounts, and fabricated assemblies recognize jack bolt sleeves as essential for controlled assembly and disassembly cycles. The 1-1/8-12 specification ensures compatibility with standard Grade 8 and Grade 9 fastening hardware across competition vehicles, heavy trucks, and custom fabrications. Sold as a single unit, the Jack Bolt Sleeve 1-1/8in-12 is a wear item recommended for stockpiling in any serious shop—replacement ensures zero slippage and maintains the precision fit critical to safety-critical suspension and structural applications.