Toledo Universal Thread Gauge Set

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Designed to easily identify thread diameter and pitch sizes including metric, SAE, UNF, UNC and BSP styles Holes in gauges allow easy identification of component sizes 4 piece set suitable for use to identify bolts, fittings, pipe and spark plug sizes Manufactured from soft aluminium alloy. Metric: Thread size - 2.5- 22mm , thread pitch - 0.45-2.5mm USS (Small): Thread size - 1/4” - 3/8” , thread pitch - 16-44 TPI USS (Large): Thread size - 1/16”-1/2”,10-18mm , thread pitch - 10-28 TPI,1.00, 1.25, 1.50 (mm),14, 18, 27 (TPI) Show more