Jam Nut 3/8-24 Steel LH

The Jam Nut 3/8-24 Steel LH from FK ROD ENDS is a precision fastening component engineered for marine and boating applications where secure, adjustable connections are critical. Whether you're building or servicing rod end assemblies on steering systems, control linkages, or suspension components, this left-hand threaded jam nut provides the reliability that serious anglers and boat builders demand. Constructed from durable steel with zinc oxide coating, it resists corrosion in saltwater and freshwater environments alike.

The 3/8-24 specification refers to the 3/8-inch diameter with 24 threads per inch—a standard pitch that ensures smooth engagement and fine adjustment capability. The left-hand thread design allows for lockdown from the opposite direction, simplifying assembly in tight spaces common on boat frames and mechanical linkages. Zinc oxide plating protects against oxidation and rust while maintaining a clean, professional appearance. The compact 1.7-inch length and minimal 0.01-pound weight make it ideal for weight-sensitive marine builds where every ounce matters.

Boaters and marine technicians rely on FK ROD ENDS jam nuts for applications requiring dual-locking mechanisms—pairing them with matching rod end studs to create bulletproof connections that won't vibrate loose under heavy throttle or rough seas. The left-hand thread orientation is essential when standard right-hand threads would unwind during operation. Installation is straightforward: thread onto the corresponding left-hand rod end, then secure using a second nut or washer assembly to prevent rotation. Stock this fastener for steering repairs, engine mounts, trim tab actuators, and any marine assembly where precision and corrosion resistance are non-negotiable.