Every Thread Size

Pick a size for its tap drill, clearance holes, wrench and hex key sizes, and the nearest thread in the other system.

• #0-803/64
• #1-64#53
• #1-72#53
• #2-56#50
• #2-64#50
• #3-48#47
• #3-56#45
• #4-40#43
• #4-48#42
• #5-40#38
• #5-44#37
• #6-32#36
• #6-40#33
• #8-32#29
• #8-36#29
• #10-24#25
• #10-32#21
• #12-24#16
• #12-28#14
• 1/4-20#7
• 1/4-28#3
• 5/16-18F
• 5/16-24I
• 3/8-165/16
• 3/8-24Q
• 7/16-14U
• 7/16-2025/64
• 1/2-1327/64
• 1/2-2029/64
• 9/16-1231/64
• 9/16-1833/64
• 5/8-1117/32
• 5/8-1837/64
• 3/4-1021/32
• 3/4-1611/16
• 7/8-949/64
• 7/8-1413/16
• 1-87/8
• 1-1259/64

• M1.6 × 0.351.25 mm
• M2 × 0.41.6 mm
• M2.5 × 0.452.05 mm
• M3 × 0.52.5 mm
• M3 × 0.352.65 mm
• M4 × 0.73.3 mm
• M4 × 0.53.5 mm
• M5 × 0.84.2 mm
• M5 × 0.54.5 mm
• M6 × 1.05 mm
• M6 × 0.755.2 mm
• M8 × 1.256.8 mm
• M8 × 1.07 mm
• M10 × 1.58.5 mm
• M10 × 1.258.8 mm
• M10 × 1.09 mm
• M12 × 1.7510.2 mm
• M12 × 1.510.5 mm
• M12 × 1.2510.8 mm
• M14 × 2.012 mm
• M14 × 1.512.5 mm
• M16 × 2.014 mm
• M16 × 1.514.5 mm
• M20 × 2.517.5 mm
• M20 × 1.518.5 mm
• M24 × 3.021 mm
• M24 × 2.022 mm