Screw Jack 3/4in-10 UNC 10in Long Swivel Cup

The Screw Jack 3/4in-10 UNC 10in Long Swivel Cup is a precision bottle jack component engineered for automotive enthusiasts and professional mechanics who demand reliability during frame work, suspension modifications, and engine bay operations. This heavy-duty screw jack assembly serves as the load-bearing interface between your lifting equipment and vehicle contact points, making it essential for safe, controlled elevation during restoration projects, lowering kit installations, and structural repairs. Whether you're performing a complete frame-off rebuild or fine-tuning suspension geometry, a quality swivel cup jack prevents damage to painted surfaces and distributes load evenly across contact areas.

Built with a 3/4 inch–10 UNC (Unified National Coarse) threaded specification, this 10-inch-long jack features a swivel cup head design that rotates freely to accommodate angled lifting surfaces and uneven contact geometry common in automotive work. The swivel mechanism reduces binding and ensures threads remain perpendicular to the load path, preventing cross-threading and extending service life under repeated use. At 1.11 pounds with compact 1.7 x 1.3 x 12.75-inch dimensions, this component integrates seamlessly into standard bottle jack assemblies and aftermarket lifting systems while maintaining the structural integrity required for controlled weight distribution on precision frame equipment.

This screw jack assembly is ideal for fabricators, transmission specialists, and DIY builders working with adjustable lifting platforms or custom hydraulic press rigs where thread-on contact points replace fixed cups. The swivel cup design proves invaluable when working on modern vehicles with sculpted undercarriage geometry, classic cars with irregular frame contours, or wide-body modifications where conventional jack pads create concentrated stress points. Ensure compatibility with your specific bottle jack model by verifying the 3/4in-10 UNC thread pitch before installation, and always reference manufacturer load ratings to maintain safe operating margins during critical suspension and frame work.