QA1 KFL10S K Series 3-Piece Carbon Steel Female Rod End 5/8-18 LH Stud

The QA1 KFL10S is a K Series three-piece carbon steel female rod end featuring a left-hand 5/8"-18 threaded body with an integrated stud configuration. Designed for performance steering linkages, suspension components, and motorsport applications, this rod end delivers precise articulation and long-lasting durability where it counts most.

The KFL10S uses a 5/8" bore and accepts a 5/8"-18 LH female thread, making it an ideal choice for adjustable tie rod assemblies and custom suspension builds that require left-hand thread pairing. The pre-attached stud allows for higher misalignment angles compared to standard bolt-mounted configurations and simplifies installation in tight linkage setups.

Construction Details:

• Ball: 52100 bearing steel — heat treated, precision ground, and hard chrome plated for exceptional hardness and wear resistance
• Race: Alloy steel, corrosion and wear resistant
• Body: Carbon steel with protective coating for corrosion resistance
• Design: Traditional 3-piece construction
• Thread: 5/8"-18 left-hand (LH) female
• Bore Size: 5/8" (0.6250 in.)
• Configuration: Stud (S) — pre-attached stud for direct connection

QA1 K Series rod ends are available in both right- and left-hand thread configurations and in inch dimensions, making them highly versatile for custom builds. Grease fitting and stud configurations are both available across the KF Series lineup. Built to QA1's exacting tolerances, the KFL10S is well-suited for street rods, race cars, and performance vehicles requiring reliable, high-quality spherical rod end bearings in their steering and suspension systems.