99 sizes

Metric (ISO) threads

Tap the size you need for its full dimensions, tap drill, clearance hole, torque estimate and wrench sizes.

Metric coarse Metric fine

34 sizes

Metric coarse

M1 × 0.25Tap 0.75 mmØ 1 mm · pitch 0.25 mm M1.2 × 0.25Tap 0.95 mmØ 1.2 mm · pitch 0.25 mm M1.4 × 0.3Tap 1.1 mmØ 1.4 mm · pitch 0.3 mm M1.6 × 0.35Tap 1.25 mmØ 1.6 mm · pitch 0.35 mm M1.8 × 0.35Tap 1.45 mmØ 1.8 mm · pitch 0.35 mm M2 × 0.4Tap 1.6 mmØ 2 mm · pitch 0.4 mm M2.5 × 0.45Tap 2.05 mmØ 2.5 mm · pitch 0.45 mm M3 × 0.5Tap 2.5 mmØ 3 mm · pitch 0.5 mm M3.5 × 0.6Tap 2.9 mmØ 3.5 mm · pitch 0.6 mm M4 × 0.7Tap 3.3 mmØ 4 mm · pitch 0.7 mm M5 × 0.8Tap 4.2 mmØ 5 mm · pitch 0.8 mm M6 × 1.0Tap 5 mmØ 6 mm · pitch 1 mm M7 × 1.0Tap 6 mmØ 7 mm · pitch 1 mm M8 × 1.25Tap 6.75 mmØ 8 mm · pitch 1.25 mm M10 × 1.5Tap 8.5 mmØ 10 mm · pitch 1.5 mm M12 × 1.75Tap 10.25 mmØ 12 mm · pitch 1.75 mm M14 × 2.0Tap 12 mmØ 14 mm · pitch 2 mm M16 × 2.0Tap 14 mmØ 16 mm · pitch 2 mm M18 × 2.5Tap 15.5 mmØ 18 mm · pitch 2.5 mm M20 × 2.5Tap 17.5 mmØ 20 mm · pitch 2.5 mm M22 × 2.5Tap 19.5 mmØ 22 mm · pitch 2.5 mm M24 × 3.0Tap 21 mmØ 24 mm · pitch 3 mm M27 × 3.0Tap 24 mmØ 27 mm · pitch 3 mm M30 × 3.5Tap 26.5 mmØ 30 mm · pitch 3.5 mm M33 × 3.5Tap 29.5 mmØ 33 mm · pitch 3.5 mm M36 × 4.0Tap 32 mmØ 36 mm · pitch 4 mm M39 × 4.0Tap 35 mmØ 39 mm · pitch 4 mm M42 × 4.5Tap 37.5 mmØ 42 mm · pitch 4.5 mm M45 × 4.5Tap 40.5 mmØ 45 mm · pitch 4.5 mm M48 × 5.0Tap 43 mmØ 48 mm · pitch 5 mm M52 × 5.0Tap 47 mmØ 52 mm · pitch 5 mm M56 × 5.5Tap 50.5 mmØ 56 mm · pitch 5.5 mm M60 × 5.5Tap 54.5 mmØ 60 mm · pitch 5.5 mm M64 × 6.0Tap 58 mmØ 64 mm · pitch 6 mm

65 sizes

Metric fine

M6 × 0.75Tap 5.25 mmØ 6 mm · pitch 0.75 mm M7 × 0.75Tap 6.25 mmØ 7 mm · pitch 0.75 mm M8 × 0.75Tap 7.25 mmØ 8 mm · pitch 0.75 mm M8 × 1.0Tap 7 mmØ 8 mm · pitch 1 mm M10 × 0.75Tap 9.25 mmØ 10 mm · pitch 0.75 mm M10 × 1.0Tap 9 mmØ 10 mm · pitch 1 mm M10 × 1.25Tap 8.75 mmØ 10 mm · pitch 1.25 mm M12 × 1.0Tap 11 mmØ 12 mm · pitch 1 mm M12 × 1.25Tap 10.75 mmØ 12 mm · pitch 1.25 mm M12 × 1.5Tap 10.5 mmØ 12 mm · pitch 1.5 mm M14 × 1.25Tap 12.75 mmØ 14 mm · pitch 1.25 mm M14 × 1.5Tap 12.5 mmØ 14 mm · pitch 1.5 mm M16 × 1.0Tap 15 mmØ 16 mm · pitch 1 mm M16 × 1.5Tap 14.5 mmØ 16 mm · pitch 1.5 mm M18 × 1.0Tap 17 mmØ 18 mm · pitch 1 mm M18 × 1.5Tap 16.5 mmØ 18 mm · pitch 1.5 mm M18 × 2.0Tap 16 mmØ 18 mm · pitch 2 mm M20 × 1.0Tap 19 mmØ 20 mm · pitch 1 mm M20 × 1.5Tap 18.5 mmØ 20 mm · pitch 1.5 mm M20 × 2.0Tap 18 mmØ 20 mm · pitch 2 mm M22 × 1.0Tap 21 mmØ 22 mm · pitch 1 mm M22 × 1.5Tap 20.5 mmØ 22 mm · pitch 1.5 mm M22 × 2.0Tap 20 mmØ 22 mm · pitch 2 mm M24 × 1.0Tap 23 mmØ 24 mm · pitch 1 mm M24 × 1.5Tap 22.5 mmØ 24 mm · pitch 1.5 mm M24 × 2.0Tap 22 mmØ 24 mm · pitch 2 mm M27 × 1.0Tap 26 mmØ 27 mm · pitch 1 mm M27 × 1.5Tap 25.5 mmØ 27 mm · pitch 1.5 mm M27 × 2.0Tap 25 mmØ 27 mm · pitch 2 mm M30 × 1.5Tap 28.5 mmØ 30 mm · pitch 1.5 mm M30 × 2.0Tap 28 mmØ 30 mm · pitch 2 mm M30 × 3.0Tap 27 mmØ 30 mm · pitch 3 mm M33 × 1.5Tap 31.5 mmØ 33 mm · pitch 1.5 mm M33 × 2.0Tap 31 mmØ 33 mm · pitch 2 mm M33 × 3.0Tap 30 mmØ 33 mm · pitch 3 mm M36 × 2.0Tap 34 mmØ 36 mm · pitch 2 mm M36 × 3.0Tap 33 mmØ 36 mm · pitch 3 mm M39 × 2.0Tap 37 mmØ 39 mm · pitch 2 mm M39 × 3.0Tap 36 mmØ 39 mm · pitch 3 mm M42 × 2.0Tap 40 mmØ 42 mm · pitch 2 mm M42 × 3.0Tap 39 mmØ 42 mm · pitch 3 mm M42 × 4.0Tap 38 mmØ 42 mm · pitch 4 mm M45 × 1.5Tap 43.5 mmØ 45 mm · pitch 1.5 mm M45 × 2.0Tap 43 mmØ 45 mm · pitch 2 mm M45 × 3.0Tap 42 mmØ 45 mm · pitch 3 mm M45 × 4.0Tap 41 mmØ 45 mm · pitch 4 mm M48 × 1.5Tap 46.5 mmØ 48 mm · pitch 1.5 mm M48 × 2.0Tap 46 mmØ 48 mm · pitch 2 mm M48 × 3.0Tap 45 mmØ 48 mm · pitch 3 mm M48 × 4.0Tap 44 mmØ 48 mm · pitch 4 mm M52 × 1.5Tap 50.5 mmØ 52 mm · pitch 1.5 mm M52 × 2.0Tap 50 mmØ 52 mm · pitch 2 mm M52 × 3.0Tap 49 mmØ 52 mm · pitch 3 mm M52 × 4.0Tap 48 mmØ 52 mm · pitch 4 mm M56 × 1.5Tap 54.5 mmØ 56 mm · pitch 1.5 mm M56 × 2.0Tap 54 mmØ 56 mm · pitch 2 mm M56 × 3.0Tap 53 mmØ 56 mm · pitch 3 mm M56 × 4.0Tap 52 mmØ 56 mm · pitch 4 mm M60 × 1.5Tap 58.5 mmØ 60 mm · pitch 1.5 mm M60 × 2.0Tap 58 mmØ 60 mm · pitch 2 mm M60 × 3.0Tap 57 mmØ 60 mm · pitch 3 mm M60 × 4.0Tap 56 mmØ 60 mm · pitch 4 mm M64 × 2.0Tap 62 mmØ 64 mm · pitch 2 mm M64 × 3.0Tap 61 mmØ 64 mm · pitch 3 mm M64 × 4.0Tap 60 mmØ 64 mm · pitch 4 mm

Frequently asked questions

What does M8x1.25 mean?

M8x1.25 is a metric (ISO) thread callout: M8 is the nominal major diameter of 8 mm, and 1.25 is the thread pitch in millimeters. Coarse is the default pitch for each size, so when a drawing or supplier says just M8, it means this 1.25 mm coarse pitch.

What is the difference between coarse and fine pitch?

Coarse is the default pitch for a given diameter: when a drawing or supplier names only the size, it means the coarse pitch. A metric fine thread has a tighter pitch than the standard coarse pitch for the same diameter, which suits thin walls, fine adjustment and vibration-sensitive joints.