SAE/Inch Screw Checker (#1 - 5/16”) - Made in USA Review

Average Reviews:

(More customer reviews)The Screw Checker is great for determining diameter AND thread cut size of screws and bolts. Anybody can check the diameter but the tread size is tricky and this is the only guage I know of that accomplishes this task. Accurately described and promptly shipped. A++

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Screw Checker Gages - Metric or InchMeasurement Type: InchMinimum Screw Size: #1Maximum Screw Size: 5/16

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