Description
This item is brand-new, factory sealed.
Bolts, fittings, pipe threads and spark plugs with US or metric threads are easily identified. Aluminum gauges identify: 1.) US threads from #5 to 3/4 pitch of ~10 TPI to 44 TPI. 2.) Metric threads from 2.5 to 22 mm ~and pitch of .45 to 2.5 mm. 3.) Pipe threads 1/16 to 1/2 with ~14 TPI to 27 TPI. 4.) Spark plug threads 10 to 18 mm.
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