Draper 28 Blade Screw Pitch Gauge Set 4 - 62 Tpi UNF & UNC
Draper 28 Blade Screw Pitch Gauge Set 4 - 62 Tpi UNF & UNC
Folding leaves, individually stamped with accurately formed thread profiles. American National Thread UNC UNF, in the range 4 62TPI....
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