The SPI 13-343-9 Screw Checker Gage has the following specifications:
Measuring Range: M2 – M7
Type: Metric
Made of chrome plated steel
Features:
Ingenious gage quickly tells you size, pitch, tap drill sizes, clearance drill sizes, tap series, length and basic diameter of American, Unified and
Metric machine screws.
Straightens bent screws and cleans up rusty or battered threads.
Perfect for holding screws for cutting, filing or altering heads.
Includes complete instructions, drill chart, conversion table and chart, and how to straighten and cut screws using checkers.
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