Sealey AK70NBC Nut & Bolt Thread Checker Imperial Metric Measure Thread & Pitch

Sealey : AK70NBC. Blue : Imperial. Imperial UNC/UNF: 6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20. On wire Lanyards with colour coded dividers.

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