📢 We are away at ToolFair Bolton - Unfortunately, we will be unable to dispatch any orders until our return on Monday, 10th March. However, you may still place an order, and we will process it as soon as possible upon our return. 📍 BOLTON ARENA, BOLTON 🗓️ 6th-7th March 2025 10am-4pm

Thread Table

PITCH (MM)
THREADS PER INCH (TPI)
Size Coarse Fine Extra Fine UNC UNF BSW BSF
M1.6 - #0 0.35 - - - 80 - -
M2 - #1 0.4 - - - 72 - -
- - #2 - - - 56 64 - -
M2.5 - #3 0.45 - - 48 56 - -
- - #4 - - - 40 48 - -
M3 1/8" #5 0.5 - - 40 44 40 -
M3.5 - #6 0.6 - - 32 40 - -
M4 - #8 0.7 - - 32 36 - -
M5 3/16" #10 0.8 - - 24 32 24 32
- - #12 - - - 24 28 - -
M6 1/4" - 1 - - 20 28 20 26
M8 5/16" - 1.25 1 - 18 24 18 22
M10 3/8" - 1.5 1.25 1 16 24 16 20
- 7/16" - - - - 14 20 14 18
M12 1/2" - 1.75 1.5 1.25 13 20 12 16
M14 9/16" - 2 1.5 - 12 18 12 16
M16 5/8" - 2 1.5 - 11 18 11 14
M18 - - 2.5 1.5 - - - - -
M20 3/4" - 2.5 1.5 - 10 16 10 12
M22 7/8" - 2.5 1.5 - 9 14 9 11
M24 1" - 3 2 - 8 12 (14) 8 10