Identify bolts with ease! These thread gauges will help you easily determine the diameter and thread pitch of external thread and have a built in ruler for measuring length as well.

US Thread Gauge

Metric Thread Gauge

Click on one of the images for larger versions.

Diameters:
1/4", 5/16", 3/8", 7/16",
5/8", 3/4", 7/8", 1"
Diameters:
4mm, 5mm, 6mm, 8mm, 10mm, 12mm,
14mm, 16mm, 18mm, 20mm
Thread Counts:
28, 24, 20, 18, 16, 14, 13, 12,
11, 10, 9, 7, 6, 5, 4-1/2
Thread Pitches:
0.8, 1.0, 1.25, 1.5, 1.75, 2.0,
2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6

Click on a product # for additional info

Prod. # Gauge units Each price Bag price Price Buy
7096 US $2.49 / ea $9.99 / 5 $2.49 / ea $9.99 / 5
7095 Metric $2.49 / ea $9.99 / 5 $2.49 / ea $9.99 / 5
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