5/16-24 LH Tube End - 1/2in x .058in

The MEZIERE 5/16-24 LH Tube End (Model RE1010AL) is a precision weld-on threaded fitting engineered for custom cooling system fabrication and high-performance engine bay plumbing. This left-hand female thread connector accommodates 1/2-inch diameter tubing with 0.058-inch wall thickness, making it ideal for radiator hose terminations, coolant line repairs, and custom radiator bypass configurations on street machines, race vehicles, and restoration projects.

Constructed from chromoly steel with a natural finish, this tube end delivers proven durability in thermal cycling and vibration-prone engine compartments. The 5/16-24 left-hand thread specification ensures compatibility with OEM and aftermarket coolant block fittings designed to accept this standard connection size. The 0.058-inch wall specification is critical—thinner walls than this sacrifice strength under pressure, while heavier tubing reduces system flexibility and complicates bends around tight engine bay layouts. The weld-on design eliminates mechanical fasteners at the joint, creating a permanent, leak-proof connection that withstands sustained coolant pressure without the risk of thread separation.

Buyers fabricating custom cooling systems—whether upgrading a classic hot rod, building a competition engine, or restoring a vintage muscle car—rely on MEZIERE fittings to maintain system integrity across wide temperature and pressure swings. Left-hand threads are specified in certain factory and racing applications to prevent inadvertent loosening under vibration. Individual tube end sizing ensures you source the exact fitting needed without over-ordering or compromising system flow geometry.

This single piece allows builders to customize coolant routing, create redundant flow paths, or replace damaged factory fittings without replacing entire hoses or radiators. Stock this MEZIERE fitting for immediate plumbing repairs or build-day modifications.