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Threads per Inch and Thread Pitch Identifiers
Determine threads per inch and thread pitch on nuts, bolts, and other fasteners. Identifiers in a variety of sizes are riveted together in a fan design—pull one out and hold it against your threads to see if it fits. Once you’ve found a match, fold identifiers in to store them in your pocket or tool bag.
For technical drawings and 3-D models, click on a part number.
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| For Use With | For Thread Type | For Thread Location | For Thread Pitch  | No. of Identifiers | Lg. | Wd. | Manufacturer | Manufacturer Model No. | Each | |
Metric | ||||||||||
Steel | ||||||||||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | 0.5 mm, 0.75 mm, 1 mm, 1.1 mm, 1.25 mm, 1.5 mm, 1.75 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm | 27 | 3 1/2" | 5/8" | Starrett | 159M | 00000000 | 000000 |