5/16-24 LH Steel Jam Nuts 50pk

The ALLSTAR PERFORMANCE 5/16-24 LH Steel Jam Nuts 50-pack (ALL18253-50) are specialized fasteners designed for applications requiring left-hand threading, such as certain engine builds and fuel system assemblies. These nuts are essential for mechanics and performance enthusiasts who need reliable fasteners that prevent loosening in reverse-rotation scenarios.

Manufactured from hardened steel, these jam nuts feature a 5/16-inch diameter with 24 threads per inch (TPI), ensuring fine-pitch engagement for controlled clamping force. The left-hand thread direction is critical for applications where centrifugal force or rotational movement would naturally tighten rather than loosen the fastener, making them ideal for specific automotive applications.

These nuts are particularly beneficial for street and race mechanics involved in carburetor tuning, fuel pressure regulator installation, and intake manifold fastening. The 50-piece bulk quantity ensures you have enough stock for complete builds or shop inventory, reducing the need for frequent reordering.