Short Machine Hand Taps
Table Shows General Dimensions Applicable To Standard Thread Designations
| Nominal Dai d | Thread Designations | Overall Length |
Length of Thread |
Length of Neck |
Dia of Neck |
Dia of Shank |
Length of Square |
Size of Square |
Style | Types | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Above | Up To | ISO Metric Coarse | ISO Metric Fine | UNC | UNF | BSW | BSF | BA | L | d2 | d | 12 | a | ||||
| 1.4 | 1.8 | M1.6 | 1 | STRAIGHT | |||||||||||||
| M1.8 | No. 0-80 | 10 & 11 | 41 | 8 | 5 | 2.5 | 4 | 2 | FLUTE | ||||||||
| 1.8 | 2 | M2 | No. 1-64 | No. 1-72 | 9 | 41 | 8 | 5.5 | 2.5 | 4 | 2 | SPIRAL POINT | |||||
| M2.2 | No. 2-56 | No. 2-64 | FLUTELESS | ||||||||||||||
| 2 | 2.8 | M2.5 | M2. 5X0.36 | No. 3-48 | No. 3-56 | 8,7 & 6 | 44.5 | 9.5 | 6 | 2.8 | 5 | 2.24 | |||||
| 2.8 | 3.2 | M3 | M3x0.35 | No. 4-40 | No. 4-48 | 2 | |||||||||||
| No. 5-40 | No. 5-44 | 1/8-40 | 5 | 48 | 11 | 7 | 2.2 | 3.15 | 5 | 2.5 | |||||||
| 3.2 | 3.6 | M3.5 | M3.5×0.35 | No. 6-32 | No. 6-40 | 4 | 50 | 13 | 7 | 2.5 | 3.55 | 5 | 2.8 | STRAIGHT | |||
| 3.6 | 4 | M4 | M4x0.5 | 53 | 13 | 8 | 2.8 | 4 | 6 | 3.15 | FLUTE | ||||||
| 4 | 4.5 | M4.5 | M4.5×0.5 | No. 8-32 | No. 8-36 | 3 | 53 | 13 | 8 | 3.15 | 4.5 | 6 | 3.55 | SPIRAL POINT | |||
| 4.5 | 5 | M5x0.5 | No. 10-24 | No. 10-32 | 3/16-24 | 3/16-32 | 2 | 58 | 16 | 9 | 3.6 | 5 | 7 | 4 | QUICK SPIRAL | ||
| 5 | 5.6 | No. 12-24 | No. 12-28 | 7/32-28 | 1 | 62 | 17 | 9 | 4.25 | 5.6 | 7 | 4.5 | FLUTELESS | ||||
| 5.6 | 6.35 | M6 | M6x0.75 | 1/4-28 | 1/4-28 | 1/4-20 | 1/4-26 | 0 | 66 | 18 | 11 | 4.5 | 6.3 | 8 | 5 | LONG SHANK MACHINE | |
| 6.35 | 7.2 | M7 | M7x0.75 | 9/32-26 | 66 | 18 | 11 | 5.3 | 7.1 | 8 | 5.6 | ||||||
| 7.2 | 8 | M8 | M8x1 | 5/16-18 | 5/16-18 | 5/16-18 | 5/16-22 | 72 | 20 | 13 | 6 | 8 | 9 | 6.3 | |||
| 8 | 9 | M9 | 72 | 20 | 15 | 7.1 | 9 | 10 | 7.1 | ||||||||
| 9 | 10 | M10 | M10 x1.25 | 3/8-24 | 3/8/-16 | 3/8-16 | 3/8-20 | 80 | 22 | 16 | 7.5 | 10 | 11 | 8 | |||
| 10 | 10.6 | 84 | 22 | 7.1 | 8 | 5.6 | 3 | STRAIGHT | |||||||||
| 10.6 | 11.8 | M11 | 7/16-14 | 7/16-20 | 7/16-14 | 7/16-18 | 85 | 22 | 8 | 9 | 6.3 | FLUTE | |||||
| 11.8 | 13.2 | M12 | M12x1.25 | 1/2-13 | 1/2-20 | 1/2-13 | 1/2-16 | 89 | 24 | 9 | 10 | 7.1 | SPIRAL POINT | ||||
| 13.2 | 15 | M14 | M14x1.5 | 9/16-12 | 9/16-18 | 9/16-12 | 9/16-16 | 95 | 26 | 11.2 | 12 | 9 | QUICK SPIRAL | ||||
| 15 | 17 | M16 | M16x1.5 | 5/8-11 | 5/8-18 | 5/8-11 | 5/8-14 | 102 | 27 | 12.5 | 13 | 10 | LONG SHANK MACHINE | ||||
| 17 | 21.2 | M18 | M18x1.5 | 11/16-11 | 11/16-14 | FLUTELESS | |||||||||||
| M20 | M20x1.5 | 3/4-10 | 3/4-16 | 3/4-10 | 3/4-12 | 112 | 32 | 14 | 14 | 11.2 | |||||||
| 21.2 | 23.6 | M22 | M22x1.5 | 7/8-09 | 7/8-14 | 7/8-09 | 7/8-11 | 118 | 34 | 16 | 16 | 12.5 | |||||
| 23.6 | 26.5 | M24 | M24 x2 | 1-8 | 1-12 | 1-8 | 1-10 | 130 | 40 | 18 | 18 | 14 | |||||
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