Sealey Imperial Nut & Bolt Checker

Accommodates 22 Imperial sizes for common nuts, bolts and screws.
Designed to accurately identify and measure threads, ensuring correct fastener selection.
Manufactured from durable alloy for reliable, long-term use.
Compact and lightweight for easy transport and storage.
Features easy-to-read markings with male and female versions of each size clearly labelled.
Imperial Sizes: Fine; 10-32, 1/4"-28, 5/16”-24, 3/8”-24, 7/16”-20, 1/2”- 20, 9/16”-18, 5/8”-18, 3/4”-16, 1”-12, Coarse; 6 -32, 8-32, 10-24, 1/4”-20, 5/16”-18, 3/8”-16, 7/16”-14, 1/2”-13, 9/16”-12, 5/8”-11, 3/4”-10, 1”-8.
Model No. AK29