Grease Nipple Sizes

Grease Nipple Thread Identifier

Stop buying the wrong grease nipples! Select your tractor brand or measure the old nipple → instantly see the correct thread & buy link.

Quick Brand Guide

Thread Size Spanner Size (Across Flats) Overall Length Common On Buy Pack
1/4" UNF 11 mm ~21 mm Most modern tractors (John Deere, Case, NH, Fendt, etc.) 1/4" UNF → Buy 10-Pack
M6 × 1.0 9 mm ~19 mm JCB, Manitou, older Massey Ferguson, Valtra M6 × 1.0 → Buy 10-Pack
M8 × 1.0 11 mm ~20 mm Claas, some New Holland, Fastrac M8 × 1.0 → Buy 10-Pack
M10 × 1.0 13 mm ~22 mm Older Massey Ferguson, Ford/New Holland M10 × 1.0 → Buy 10-Pack
1/8" BSP 11 mm ~20 mm Very old British tractors (pre-1990s) 1/8" BSP → Buy 10-Pack
Straight 1/4" 15 mm ~30 mm Vintage & restored tractors Straight 1/4" → Buy 10-Pack