Thread Sizes: Cool Tool - cheap.

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
26
38
64
Norco CA
www.mcratracing.com
This is sold by ENCO.

It can verify which thread a nut or bolt is (metric, inch, male, female) quickly.

The sizes are printed on each slug, and they are permanently attached by steel cable, but they slide and swivel easy to give you plenty of room if the hole is hard to get to.
 

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