Identify Screws Instantly
These ingenious, threaded gauges quickly tell you size, threads per inch, mm pitch, tap drill size, clearance drill size, length and basic diameter. Even straightens bent screws and cleans up rusty or battered threads. Made of heavy gauge, satin chrome plated steel. Instructions included.
#60361 Inch Screw Chek'r for American and Unified screws from no. 1 through 5/16 inch. Also identifies wood screws, sheet metal screws, rivets, cotter pins.
#60345 Metric Screw Chek'r for metric screws from 2mm through 7mm.