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Screw Size Identifiers
 |  |
Inch | Metric |
Identify unknown screws, bolts, threaded rods, pins, rivets, and drill bits by inserting them into labeled holes on these steel reference plates. Faster and more reliable than measuring with calipers, the plates eliminate guesswork when sorting mixed fasteners or selecting the correct tap drill size.
For Use With | For Thread Type | For Thread Location | For Thread Size | For Screw Size | For Dia. | For Drill Bit Size | Wd. | Ht. | Thk. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inch | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Pins, Rivets, Drill Bits | UNC/UNF | External | 1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-36, 4-40, 4-48, 5-40, 5-44, 6-32, 6-36, 6-40, 8-32, 8-36, 8-40, 10-24, 10-32, 12-24, 12-28, 12-32, 1/4"-20, 1/4"-28, 1/4"-32, 5/16"-18, 5/16"-24, 5/16"-32 | No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16" | 0.073", 0.086", 3/32", 0.112", 1/8", 0.138", 5/32", 0.164", 3/16", 7/32", 1/4", 9/32", 5/16" | 7/32", 1/4", 9/32", 5/16", 53 Ga., 51 Ga., 50 Ga., 48 Ga., 47 Ga., 45 Ga., 43 Ga., 42 Ga., 39 Ga., 38 Ga., 37 Ga., 36 Ga., 35 Ga., 33 Ga., 30 Ga., 29 Ga., 28 Ga., 25 Ga., 23 Ga., 21 Ga., 19 Ga., 16 Ga., 14 Ga., 13 Ga., 10 Ga., 8 Ga., 3 Ga., F, I | 3" | 5 1/8" | 5/64" | 98728A112 | 000000 | ||
Metric | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods | Metric | External | M8 × 0.75 mm, M8 × 1 mm, M8 × 1.25 mm, M9 × 0.75 mm, M9 × 1 mm, M9 × 1.25 mm, M10 × 0.75 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M11 × 0.75 mm, M11 × 1 mm, M11 × 1.5 mm, M12 × 1 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 1.5 mm, M14 × 2 mm | M8, M9, M10, M11, M12, M14 | — | — | 5 1/8" | 5 3/8" | 1/8" | 98728A116 | 00000 | ||
| Screws, Bolts, Threaded Rods, Drill Bits | Metric | External | M2 × 0.25 mm, M2 × 0.4 mm, M2.2 × 0.25 mm, M2.2 × 0.45 mm, M2.5 × 0.35 mm, M2.5 × 0.45 mm, M3 × 0.35 mm, M3 × 0.5 mm, M3.5 × 0.35 mm, M3.5 × 0.6 mm, M4 × 0.5 mm, M4 × 0.7 mm, M4.5 × 0.5 mm, M4.5 × 0.75 mm, M5 × 0.5 mm, M5 × 0.8 mm, M5.5 × 0.5 mm, M6 × 0.75 mm, M6 × 1 mm, M7 × 0.75 mm, M7 × 1 mm | M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M5.5, M6, M7 | — | 7/32", 52 Ga., 50 Ga., 48 Ga., 46 Ga., 45 Ga., 43 Ga., 39 Ga., 37 Ga., 32 Ga., 31 Ga., 30 Ga., 28 Ga., 25 Ga., 22 Ga., 21 Ga., 18 Ga., 16 Ga., 10 Ga., 8 Ga., 4 Ga., B, D, J | 3" | 5 3/8" | 3/32" | 98728A114 | 00000 | ||
Wall-Mount Thread-It Screw, Bolt, and Nut Size Identifiers
 |
Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.
Mounting Holes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Use With | For Thread Type | For Thread Location | For Thread Size | Wd. | Ht. | Thk. | No. of | Hole Dia. | Fasteners Included | Each | |||
Inch/Metric | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF/Metric | External/Internal | 6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm, M8 × 1.25 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm | 3" | 39" | 1/2" | 3 | 5/16" | No | 20375A27 | 000000 | ||
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.
Folded | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Use With | For Thread Type | For Thread Location | For Threads per Inch | For Thread Pitch, mm | No. of Identifiers | Lg. | Wd. | Mfr. | Mfr. Model No. | Each | |||
Inch | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | BSW | External/Internal | 3 1/2, 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 44, 48, 50, 60 | — | 30 | 2" | 1/2" | Starrett | 476 | 2071A119 | 000000 | ||
| Screws, Bolts, Threaded Rods | BSW | External/Internal | 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 34, 36, 40, 48, 60 | — | 28 | 2 3/4" | 3/4" | Mitutoyo | 188-102 | 2071A4 | 00000 | ||
| Screws, Bolts, Threaded Rods | BSW | External/Internal | 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62 | — | 28 | 2 3/4" | 1/2" | — | — | 2071A19 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 2 1/4, 2 3/8, 2 1/2, 2 5/8, 2 3/4, 2 7/8, 3, 3 1/4, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 24, 28 | — | 27 | 3 1/2" | 7/8" | Starrett | 155 | 2071A114 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36 | — | 28 | 2 1/2" | 5/8" | Starrett | 484 | 2071A115 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42 | — | 30 | 2 5/8" | 5/8" | Starrett | 6 | 2071A116 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42 | — | 30 | 2 3/4" | 1/2" | — | — | 2071A25 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84 | — | 51 | 2 1/4" | 2 1/4" | — | — | 2071A24 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84 | — | 51 | 3 3/8" | 3/4" | Starrett | 472 | 2071A118 | 000000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 48, 50, 56, 60 | — | 30 | 2 3/4" | 1/2" | — | — | 2071A3 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40 | — | 22 | 2 3/4" | 1/2" | — | — | 2071A1 | 00000 | ||
Stainless Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | Acme | External/Internal | 1, 1 1/3, 1 1/2, 1 3/4, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 7, 8, 9, 10, 12 | — | 16 | 4 3/4" | 1" | — | — | 2071A69 | 000000 | ||
Inch/Metric | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | BSW/Metric | External/Internal | 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62 | 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 | 52 | 2 3/4" | 1/2" | — | — | 2071A111 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | BSW/Metric | External/Internal | 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62 | 0.4, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 | 50 | 2 3/4" | 1/2" | — | — | 2071A112 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF/Metric | External/Internal | 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 28, 29, 30, 32, 34, 36, 38, 40, 42 | 0.4, 0.5, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 | 51 | 2 3/4" | 1/2" | — | — | 2071A68 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF/Metric | External/Internal | 4, 6, 8, 10, 11, 11 1/2, 12, 13, 16, 20, 28, 32, 40, 56 | 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6 | 28 | 2 3/4" | 1/2" | — | — | 2071A26 | 00000 | ||
Metric | |||||||||||||
Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | — | 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.5 | 28 | 2 1/2" | 1/2" | Starrett | 156M | 2071A65 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | — | 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.5 | 28 | 2 3/4" | 1/2" | — | — | 2071A67 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | — | 0.4, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 | 22 | 2 3/4" | 1/2" | — | — | 2071A18 | 00000 | ||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | — | 0.5, 0.75, 1, 1.1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5 | 27 | 3 1/2" | 5/8" | Starrett | 159M | 2071A121 | 00000 | ||
Stainless Steel | |||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | Metric Trapezoidal | External/Internal | — | 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 20 | 12 | 4 3/4" | 3/4" | — | — | 2071A113 | 00000 | ||
All-in-One Identifiers
 |
Find tube, pipe, fastener, wire, and drill bit sizes with one tool.
For Use With | For Screw Size | For Drill Bit Size | For Pipe Size | For Pipe Fitting Size | Wd. | Ht. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Plastic | ||||||||||
| Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire | No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12 | 1/32", 3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2", 65 Ga., 60 Ga., 55 Ga., 50 Ga., 45 Ga., 40 Ga., 35 Ga., 30 Ga., 25 Ga., 20 Ga., 15 Ga., 10 Ga., 5 Ga., A, F, K, P, U, Z | 1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6 | 1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 | 10 1/2" | 3 1/2" | 20165A34 | 00000 | ||
| Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire | No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12 | 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8" | 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 | 1/8, 1/4, 3/8, 1/2, 3/4, 1 | 8 11/16" | 4 1/4" | 20165A33 | 0000 | ||
Thread-It Screw, Bolt, and Nut Size Identifiers
 |
Thread your fastener into holes or onto plugs for quick and accurate size identification.
For Use With | For Thread Type | For Thread Location | For Thread Size | Each | |||
|---|---|---|---|---|---|---|---|
Inch | |||||||
Steel | |||||||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF | External/Internal | 6-32, 6-40, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 1"-8, 1"-12 | 20375A14 | 000000 | ||
Inch/Metric | |||||||
Steel | |||||||
| Screws, Bolts, Threaded Rods, Nuts | UNC/UNF/Metric | External/Internal | 6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm, M8 × 1.25 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm | 20375A21 | 00000 | ||
Metric | |||||||
Steel | |||||||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | M3 × 0.5 mm, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm, M8 × 1.25 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm, M14 × 1.5 mm, M14 × 2 mm, M16 × 1.5 mm, M16 × 2 mm, M20 × 1.5 mm, M20 × 2.5 mm, M24 × 2 mm, M24 × 3 mm | 20375A17 | 00000 | ||
Thread Identifier Sets
 |
Set includes calipers and gauges to identify external and internal threads.
Container | |||||||||
|---|---|---|---|---|---|---|---|---|---|
For Use With | For Thread Type | For Thread Location | Type | Material | Includes | Each | |||
Inch/Metric | |||||||||
Steel | |||||||||
| Screws, Bolts, Threaded Rods, Nuts, Pipe | NPT, UNC, UNF, BSPT, BSPP, Metric | External/Internal | Folding Case | Plastic | Caliper, Instruction Book, Two Steel Angle Gauges, Two Steel Gauges | 7863K1 | 000000 | ||
Screw, Bolt, and Nut Size Identifiers
 |  |  |
Inch | Inch/Metric | Metric |
For Use With | For Thread Type | For Thread Location | For Screw Size | For Thread Pitch, mm | For Nut Size | Wd. | Ht. | Thk. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inch | ||||||||||||
Plastic | ||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | — | External/Internal | No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4" | — | No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8" | 7 1/2" | 2 3/8" | 1/64" | 98845A650 | 00000 | ||
Inch/Metric | ||||||||||||
Plastic | ||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | — | External/Internal | No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 1", M6, M7, M8, M10, M12, M14, M16, M18, M20, M22 | — | No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8" | 9" | 3 3/4" | 1/64" | 98845A670 | 0000 | ||
Metric | ||||||||||||
Plastic | ||||||||||||
| Screws, Bolts, Threaded Rods, Nuts | Metric | External/Internal | M6, M7, M8, M10, M12, M14, M16 | 1, 1.25, 1.5, 1.75, 2 | M10, M11, M13, M17, M19, M22, M24 | 5 1/4" | 3 3/16" | 1/64" | 98845A660 | 0000 | ||
Threads per Inch and Thread Pitch Size Checkers
 |  |
Inspect fasteners and verify threads with this checker. It includes three wires for each of the pitch diameters. Select the wire that best fits the threads; then calculate the pitch diameter with the equations provided.
Wire | Container | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Use With | For Thread Type | For Thread Location | For Threads per In. | For Thread Pitch, mm | For Acme Threads per In. | No. of Wires | Lg. | Material | Type | Material | Each | |||
Inch/Metric | ||||||||||||||
| Screws, Bolts, Threaded Rods, Pipe | NPT, UNC, UNF, Metric, Acme | External | 3, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 7 1/2, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 48 | 0.5, 0.6, 0.7, 0.75, 0.8, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 | 3, 4, 5, 6, 8, 10, 12, 14, 16 | 48 | 2 3/4" | Stainless Steel | Pouch | Vinyl Plastic | 2082A1 | 000000 | ||
Acme Thread Identifiers
 |
Identify Acme threads and use as a guide while grinding and cutting Acme threads to a 29° included angle.
For Use With | For Thread Type | For Thread Location | For Acme Threads per In. | Wd. | Ht. | Thk. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Inch | ||||||||||
Steel | ||||||||||
| Screws, Bolts, Threaded Rods | Acme | External | 1, 1 1/3, 1 1/2, 1 3/4, 2, 2 1/2, 3, 4, 5, 6, 7, 8, 9, 10 | 3 3/8" | 1 5/8" | 7/64" | 8615A69 | 000000 | ||
Threads per Inch and Center Identifiers
 |
Identify threads per inch on external threads and find the center of your workpiece to line up thread-cutting tools. This identifier has a corrosion-resistant satin-chrome finish that reduces glare.
For Use With | For Thread Type | For Thread Location | For Threads per In. | Lg. | Wd. | Thk. | Mfr. | Mfr. Model No. | Appearance | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inch | |||||||||||||
Chrome-Plated Steel | |||||||||||||
| Screws, Bolts, Threaded Rods | UNC/UNF | External | 14, 20, 24, 32 | 2 1/4" | 3/4" | 3/64" | Starrett | C391 | Satin | 2072A11 | 000000 | ||
