QA1 KML4-5TS K Series 3-Piece Carbon Steel Rod End 1/4in Bore 5/16-24 LH Male Teflon Stud

The QA1 KML4-5TS is a precision K Series 3-piece carbon steel male rod end featuring a Teflon-lined stud configuration and left-hand thread. Engineered to meet SAE J1120 standards, this rod end delivers the tight tolerances and high load capacity demanded by performance suspension, steering linkage, and chassis fabrication applications.

The 3-piece construction provides superior ball-to-race conformity for reduced slop and longer service life compared to 2-piece designs. The heat-treated, hard chrome-plated 52100 bearing steel ball runs against a wear-resistant alloy steel race, while the carbon steel body features a protective corrosion-resistant coating. The Teflon (PTFE) liner eliminates the need for lubrication while reducing friction and stick-slip under load.

Key Specifications:

• Series: KM — 3-Piece Carbon Steel
• Type: Male, Left-Hand Thread with Teflon-Lined Stud
• Bore Diameter: 0.250 in (1/4 in)
• Shank Thread Size: 5/16-24 LH
• Head Diameter: 0.875 in
• Head Width: 0.281 in
• Radial Static Load Capacity: 3,467 lbf
• Ball Material: 52100 Bearing Steel — Heat Treated, Hard Chrome Plated, Precision Ground
• Race Material: Alloy Steel — Corrosion and Wear Resistant
• Body Material: Carbon Steel — Protective Corrosion-Resistant Coating
• Liner: Teflon (PTFE) — Non-Lubricated
• Standards: SAE J1120

The KML4-5TS rod end / heim joint is well-suited for custom suspension links, steering tie rod assemblies, panhard bars, trailing arms, and other high-load pivoting linkages where precision, durability, and a maintenance-free Teflon liner are required.