Type of Thread | Size Thread | Hole under Tap | Free Outer Diameter: A | Number of Coils Nf±1/4 | Standard Type |
Lock Type | ||||
Max. | Min. | Max. | Min. | 1D | 1.5D | 2D | Stainless Steel | Stainless Steel | ||
Metric Coarse Thread | M2.2 -0.45 | 2.39 | 2.30 | 3.00 | 2.80 | 3 1/8 | 5 3/8 | 7 5/8 | ◯ | ◯ |
M2.5 -0.45 | 2.69 | 2.60 | 3.50 | 3.15 | 3 3/4 | 6 3/8 | 8 7/8 | ◯ | ◯ | |
M2.6 -0.45 | 2.79 | 2.70 | 3.60 | 3.25 | 4 | 6 5/8 | 9 1/4 | ◯ | ◯ | |
M3 -0.5 | 3.20 | 3.11 | 4.10 | 3.85 | 4 | 6 5/8 | 9 1/4 | ◯ | ◯ | |
(M3 -0.6) | 3.20 | 3.13 | 4.15 | 3.80 | 3 3/8 | 5 3/4 | 8 | ◯ | ◯ | |
M3.5 -0.6 | 3.75 | 3.64 | 4.85 | 4.50 | 3 7/8 | 6 1/2 | 9 | ◯ | ◯ | |
M4 -0.7 | 4.29 | 4.16 | 5.40 | 5.20 | 3 7/8 | 6 3/8 | 8 7/8 | ◯ | ◯ | |
(M4 -0.75) | 4.23 | 4.17 | 5.55 | 5.05 | 3 3/4 | 6 1/4 | 8 3/4 | ◯ | ◯ | |
M4.5 -0.75 | 4.81 | 4.67 | 6.10 | 5.60 | 4 1/8 | 6 3/4 | 9 3/8 | ◯ | ◯ | |
M5 -0.8 | 5.33 | 5.18 | 6.60 | 6.35 | 4 3/8 | 7 1/8 | 9 7/8 | ◯ | ◯ | |
(M5 -0.9) | 5.25 | 5.20 | 6.65 | 6.10 | 3 3/4 | 6 1/4 | 8 3/4 | ◯ | ◯ | |
(M5.5 -0.9) | 5.75 | 5.70 | 7.35 | 6.85 | 4 1/8 | 6 3/4 | 9 1/2 | ◯ | ◯ | |
M6 -1.0 | 6.40 | 6.22 | 8.00 | 7.50 | 4 1/4 | 7 1/8 | 10 | ◯ | ◯ | |
M7 -1.0 | 7.40 | 7.22 | 9.10 | 8.60 | 5 1/4 | 8 5/8 | 11 3/4 | ◯ | ◯ | |
M8 -1.25 | 8.48 | 8.28 | 10.30 | 9.75 | 4 5/8 | 7 3/8 | 10 1/4 | ◯ | ◯ | |
M9 -1.25 | 9.48 | 9.28 | 11.40 | 10.85 | 5 | 8 3/8 | 11 3/4 | ◯ | ◯ | |
M10 -1.5 | 10.56 | 10.33 | 12.65 | 12.10 | 5 | 8 | 11 | ◯ | ◯ | |
M11 -1.5 | 11.56 | 11.33 | 13.65 | 13.10 | 5 5/8 | 9 1/8 | 12 5/8 | ◯ | ◯ | |
M12 -1.75 | 12.64 | 12.38 | 15.00 | 14.35 | 5 | 8 1/4 | 11 3/8 | ◯ | ◯ | |
(M13 -1.75) | 13.42 | 13.38 | 16.15 | 15.55 | 5 5/8 | 9 1/8 | 12 5/8 | ◯ | ◯ | |
M14 -2.0 | 14.73 | 14.44 | 17.45 | 16.55 | 5 1/4 | 8 1/2 | 11 3/4 | ◯ | ◯ | |
M16 -2.0 | 16.73 | 16.44 | 19.50 | 18.75 | 6 1/8 | 9 7/8 | 13 1/2 | ◯ | ◯ | |
M18 -2.5 | 18.89 | 18.55 | 22.15 | 21.50 | 5 5/8 | 9 | 12 1/2 | ◯ | ◯ | |
M20 -2.5 | 20.89 | 20.55 | 24.20 | 23.55 | 6 3/8 | 10 1/8 | 14 | ◯ | ◯ | |
M22 -2.5 | 22.89 | 22.55 | 26.10 | 25.35 | 7 1/8 | 11 1/4 | 15 1/2 | ◯ | ◯ | |
M24 -3.0 | 25.05 | 24.65 | 28.75 | 27.95 | 6 3/8 | 10 1/8 | 14 | ◯ | ◯ | |
M27 -3.0 | 28.05 | 27.65 | 32.10 | 31.05 | 7 1/4 | 11 1/2 | 15 7/8 | ◯ | ◯ | |
M30 -3.5 | 31.20 | 30.76 | 35.70 | 34.70 | 6 7/8 | 11 | 15 | ◯ | ◯ | |
M33 -3.5 | 34.20 | 33.76 | 39.10 | 37.95 | 7 1/2 | 12 | 16 1/2 | ◯ | ◯ | |
M36 -4.0 | 37.34 | 36.87 | 42.75 | 41.60 | 7 1/8 | 11 3/8 | 15 5/8 | ◯ | ◯ | |
M39 -4.0 | 40.34 | 39.87 | 45.70 | 44.80 | 7 7/8 | 12 1/8 | 17 1/8 | ◯ | ◯ | |
M42 -4.5 | 43.50 | 42.98 | 49.30 | 48.15 | 7 1/2 | 12 | 16 3/8 | ◯ | ◯ | |
M6 -0.75 | 6.31 | 6.17 | 8.00 | 7.50 | 5 7/8 | 9 3/8 | 12 7/8 | ◯ | ◯ | |
Metric Fine Thread | M8 -1.0 | 8.40 | 8.22 | 10.20 | 9.65 | 6 | 9 1/2 | 13 | ◯ | ◯ |
M8 -0.75 | 8.31 | 8.16 | 10.05 | 9.55 | 8 1/4 | 13 | 17 3/4 | ◯ | ◯ | |
M9 -1.0 | 9.40 | 9.22 | 11.25 | 10.75 | 6 7/8 | 10 7/8 | 14 7/8 | ◯ | ◯ | |
M10 -1.25 | 10.48 | 10.28 | 12.65 | 12.10 | 5 7/8 | 9 1/2 | 13 1/8 | ◯ | ◯ | |
M10 -1.0 | 10.40 | 10.22 | 12.45 | 11.95 | 7 7/8 | 12 3/8 | 17 | ◯ | ◯ | |
(M11 -1.25) | 11.52 | 11.31 | 13.80 | 13.20 | 6 3/4 | 10 3/4 | 14 5/8 | ◯ | ◯ | |
M12 -1.5 | 12.56 | 12.33 | 15.15 | 14.50 | 6 | 9 1/2 | 12 1/8 | ◯ | ◯ | |
M12 -1.25 | 12.48 | 12.28 | 14.90 | 14.30 | 7 3/8 | 11 5/8 | 16 | ◯ | ◯ | |
M12 -1.0 | 12.40 | 12.22 | 14.65 | 14.00 | 9 5/8 | 15 | 20 1/2 | ◯ | ◯ | |
(M13 -1.5) | 13.55 | 13.33 | 15.90 | 15.30 | 6 5/8 | 10 5/8 | 14 1/2 | ◯ | ◯ | |
M14 -1.5 | 14.56 | 14.33 | 17.80 | 17.20 | 7 | 11 1/8 | 15 3/8 | ◯ | ◯ | |
M16 -1.5 | 16.56 | 16.33 | 19.70 | 19.05 | 8 1/2 | 13 3/8 | 18 1/8 | ◯ | ◯ | |
M16 -1.0 | 16.40 | 16.22 | 19.30 | 18.65 | 13 1/8 | 20 1/4 | 27 3/8 | ◯ | ◯ | |
M18 -1.5 | 18.56 | 18.33 | 21.85 | 21.20 | 9 3/4 | 15 1/8 | 20 5/8 | ◯ | ◯ | |
M20 -2.0 | 20.73 | 20.44 | 24.40 | 23.75 | 7 7/8 | 12 1/2 | 17 | ◯ | ◯ | |
M20 -1.5 | 20.56 | 20.33 | 24.65 | 23.90 | 10 3/8 | 16 1/8 | 22 | ◯ | ◯ | |
M22 -1.5 | 22.56 | 22.33 | 26.30 | 25.50 | 12 1/8 | 18 3/4 | 25 1/2 | ◯ | ◯ | |
M24 -2.0 | 24.73 | 24.44 | 28.85 | 28.05 | 9 5/8 | 15 1/8 | 20 1/2 | ◯ | ◯ | |
M24 -1.5 | 24.56 | 24.33 | 28.25 | 27.50 | 13 1/8 | 20 3/8 | 27 5/8 | ◯ | ◯ | |
M27 -2.0 | 27.73 | 27.44 | 32.15 | 31.40 | 11 | 17 1/4 | 23 1/4 | ◯ | ◯ | |
M28 -1.5 | 28.56 | 28.33 | 32.60 | 31.85 | 15 3/4 | 24 3/8 | 32 7/8 | ◯ | ◯ | |
M30 -3.0 | 31.05 | 30.65 | 36.00 | 35.00 | 7 7/8 | 12 1/2 | 17 1/8 | ◯ | ◯ | |
M30 -2.0 | 30.73 | 30.44 | 35.45 | 34.55 | 12 3/8 | 19 1/4 | 26 1/8 | ◯ | ◯ | |
M30 -1.5 | 30.56 | 30.33 | 35.10 | 34.15 | 17 | 26 | 35 1/8 | ◯ | ◯ | |
M33 -3.0 | 34.05 | 33.65 | 40.20 | 39.40 | 8 3/4 | 13 3/4 | 18 3/4 | ◯ | ◯ | |
M33 -2.0 | 33.73 | 33.44 | 38.75 | 38.00 | 13 3/4 | 21 1/4 | 28 3/4 | ◯ | ◯ | |
M36 -3.0 | 37.05 | 36.65 | 43.10 | 42.20 | 9 3/4 | 15 1/8 | 20 5/8 | ◯ | ◯ | |
M39 -3.0 | 40.05 | 39.65 | 46.40 | 45.50 | 10 5/8 | 16 1/2 | 22 1/2 | ◯ | ◯ | |
M42 -3.0 | 43.05 | 42.65 | 49.65 | 48.60 | 11 1/2 | 18 | 24 3/8 | ◯ | ◯ | |
M45 -2.0 | 45.73 | 45.44 | 51.65 | 50.75 | 19 1/4 | 29 5/8 | - | ◯ | ◯ | |
M48 -3.0 | 49.05 | 48.65 | 56.10 | 55.20 | 13 1/2 | 20 3/4 | - | ◯ | ◯ | |
M52 -3.0 | 53.05 | 52.65 | 60.40 | 59.50 | - | 22 1/2 | - | ◯ | ◯ |