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Screw Size
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DFARS Specialty Metals
Tap and Drill Chart/Rulers
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One side of this ruler lists tap and drill sizes. The other side has a decimal equivalent table and a 6" rule.
Graduation | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Graduations | Color | Location | Numeric Graduations | Material | Features | Each | ||
| 7" | 1 1/4" | 1/64" | Black | Front | 8/64" | Stainless Steel | Tap and Drill Sizes for UNF, UNC, Metric ISO, and American Standard Pipe Thread Sizes Decimal Equivalent Table for 1/64" to 63/64" Hanging Hole | 2119A21 | 00000 | |
Screw Size Identifiers
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Inch | Metric |
Find thread size, screw size, diameter, or drill bit 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Drill Bit Size Gauges
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For Inch | For Letter Size | For Metric | For Wire Gauge |
For System of Measurement | For Use With | For Drill Bit Size | Wd. | Ht. | Thk. | Material | Color | Mounting Hole Dia. | Each | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Drills | 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" | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 8986A67 | 000000 | |
| Letter Size | Drills | A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 8986A65 | 00000 | |
| Metric | Drills | 1.5 mm, 2.0 mm, 2.25 mm, 2.5 mm, 2.75 mm, 3.0 mm, 3.25 mm, 3.5 mm, 3.75 mm, 4.0 mm, 4.25 mm, 4.5 mm, 4.75 mm, 5.0 mm, 5.25 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm, 7.5 mm, 8.0 mm, 8.5 mm, 9.0 mm, 9.5 mm, 10.0 mm, 10.5 mm, 11.0 mm, 11.5 mm, 12.0 mm, 12.5 mm | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 8986A64 | 00000 | |
| Wire Gauge | Drills | 80 Ga., 79 Ga., 78 Ga., 77 Ga., 76 Ga., 75 Ga., 74 Ga., 73 Ga., 72 Ga., 71 Ga., 70 Ga., 69 Ga., 68 Ga., 67 Ga., 66 Ga., 65 Ga., 64 Ga., 63 Ga., 62 Ga., 61 Ga. | 1" | 3" | 5/64" | Steel | Silver | 1/8" | 8986A66 | 00000 | |
| Wire Gauge | Drills/Taps | 60 Ga., 59 Ga., 58 Ga., 57 Ga., 56 Ga., 55 Ga., 54 Ga., 53 Ga., 52 Ga., 51 Ga., 50 Ga., 49 Ga., 48 Ga., 47 Ga., 46 Ga., 45 Ga., 44 Ga., 43 Ga., 42 Ga., 41 Ga., 40 Ga., 39 Ga., 38 Ga., 37 Ga., 36 Ga., 35 Ga., 34 Ga., 33 Ga., 32 Ga., 31 Ga., 30 Ga., 29 Ga., 28 Ga., 27 Ga., 26 Ga., 25 Ga., 24 Ga., 23 Ga., 22 Ga., 21 Ga., 20 Ga., 19 Ga., 18 Ga., 17 Ga., 16 Ga., 15 Ga., 14 Ga., 13 Ga., 12 Ga., 11 Ga., 10 Ga., 9 Ga., 8 Ga., 7 Ga., 6 Ga., 5 Ga., 4 Ga., 3 Ga., 2 Ga., 1 Ga. | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 8986A68 | 00000 |
Threads per Inch and Center Identifiers
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
All-in-One Identifiers
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
