Jack Bolt Collar 1in-8

The Jack Bolt Collar 1in-8 by Allstar Performance is a precision fastening component designed for chassis builders, fabricators, and serious automotive enthusiasts who demand reliability in critical lift and suspension work. This 1-inch diameter collar with 8 TPI (threads per inch) threading accommodates standard jack bolt applications where controlled clamping and repeatable engagement are non-negotiable. Whether you're working on frame modifications, engine bay restructuring, or setting up a custom lift system, this component ensures your jack bolts seat consistently without galling or thread damage.

The 1-inch 8 TPI design provides a coarse-pitch thread pattern that resists stripping under repetitive use and heavy clamping loads common in automotive fabrication and service environments. Allstar Performance's jack bolt collars are engineered to distribute load evenly across the bolt interface, preventing the cone stress concentration that leads to fastener failure during dynamic suspension cycles or impact events. The compact 4 x 1.5 x 7-inch footprint and lightweight 0.61-pound construction make this collar practical for tight engine compartments and underbody applications without adding unnecessary mass to your assembly.

This component excels in engine hoist mounting, transmission jack applications, and custom fabrication where precision fastening under load is essential. Mechanics and fabricators working on frame-off restorations, cage welding projects, or adjustable suspension geometry will appreciate the repeatable, controlled engagement this collar provides. Installation is straightforward—thread onto your 1-inch 8 TPI jack bolt and tighten to your specification, ensuring flush seating against the mounting surface. Compatible with standard automotive lifting equipment and bolt hardware meeting 1in-8 specifications, making it an indispensable addition to any serious shop or fabrication bay.