Fastener Thread Pitch and Tapping Drill Guide ISO Metric Coarse Thread ...

Fastener Thread Pitch and Tapping Drill Guide

ISO Metric Coarse Thread

60? Thread Angle BS3643

Size - Nominal Diameter

Pitch (mm)

Clearance Drill (mm)

M 1.60

0.35

1.8

M 2

0.4

2.4

M 2.50 M 3

0.45

2.9

0.5

3.4

M 3.50 M 4

0.6

3.9

0.7

4.5

M 5

0.8

5.5

M 6

1

6.6

M 8

1.25

9

M 10 M 12

1.5

12

1.75

14

M 14

2

16

M 16 M 20

2

18

2.5

22

M 22

2.5

25

M 24 M 27

3

27

3

30

M 30 M 33

3.5

33

3.5

36

M 36

4

40

M 42 M 48

4.5

46

5

53

M 56

5.5

62

M 64

6

70

M 68

6

74

Tap Drill (mm)

1.25 1.6 2 2.5 2.9 3.3 4.2 5 6.8 8.5 10.2 12 14 17.5 19.5 21 24 26.5 29.5 32 37.5 43 50.5 58 62

FOR INFORMATION PURPOSES ONLY ?Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley,

West Midlands, DY2 0XW, United Kingdom T: +44 (0) 1384 217 600 F: +44 (0) 1384 217 606 fastenernetwork.co.uk

Fastener Thread Pitch and Tapping Drill Guide

ISO Metric Fine Thread 60? Thread Angle BS3643

Size Nominal Diameter

M 1.0 M 1.6 M 2 M 2.2 M 2.5 M 3 M 3.5 M 4 M 5 M 6 M 8 M 8 M 10 M 10 M 10 M 12 M 12 M 12 M 14 M 14 M 14 M 16 M 16 M 18 M 18 M 18 M 20 M 20 M 20 M 22 M 22 M 22 M 24 M 24 M 24 M 27 M 27 M 27 M 30 M 30 M 30 M 30

Pitch (mm)

0.2 0.2 0.25 0.25 0.35 0.35 0.35 0.5 0.5 0.75 0.75 1 0.75 1 1.25 1 1.25 1.5 1 1.25 1.5 1 1.5 1 1.5 2 1 1.5 2 1 1.5 2 1 1.5 2 1 1.5 2 1 1.5 2 3

Clearance Drill (mm)

1.2 1.8 2.4 2.3 2.9 3.4 3.9 4.5 5.5 6.6 9 9 12 12 12 14 14 14 16 16 16 18 18 20 20 20 22 22 22 24 24 24 27 27 27 30 30 30 33 33 33 33

Tap Drill (mm)

0.8 1.4 1.75 1.95 2.1 2.6 3.1 3.5 4.5 5.2 7.2 7 9.2 9 8.8 11 10.8 10.5 13 12.8 12.5 15 14.5 17 16.5 16 19 18.5 18 21 20.5 20 23 22.5 22 26 25.5 25 29 28.5 28 27

Size Nominal Diameter

M 33 M 33 M 33 M 36 M 36 M 36 M 39 M 39 M 39 M 42 M 42 M 42 M 42 M 45 M 45 M 45 M 45 M 48 M 48 M 48 M 48 M 52 M 52 M 52 M 52 M 56 M 56 M 56 M 56 M 64 M 64 M 64 M 64 M 68 M 68 M 68 M 68

Pitch (mm)

1.5 2 3 1.5 2 3 1.5 2 3 1.5 2 3 4 1.5 2 3 4 1.5 2 3 4 1.5 2 3 4 1.5 2 3 4 1.5 2 3 4 1.5 2 3 4

Clearance Drill (mm)

36 36 36 40 40 40 43 43 43 46 46 46 50 50 50 50 50 53 53 53 53 58 58 58 58 62 62 62 62 70 70 70 70 75 75 75 75

Tap Drill (mm)

31.5 31 30 34.5 34 33 37.5 37 36 40.5 40 39 38 43.5 43 42 41 46.5 46 45 44 50.5 50 49 48 54.5 54 53 52 62.5 62 61 60 66.5 66 65 64

FOR INFORMATION PURPOSES ONLY ?Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley,

West Midlands, DY2 0XW, United Kingdom T: +44 (0) 1384 217 600 F: +44 (0) 1384 217 606 fastenernetwork.co.uk

Fastener Thread Pitch and Tapping Drill Guide

UNC - Unified National Coarse Thread 60? Thread Angle ANSI B1.1

Nominal Diameter

TPI

1-64 UNC

64

2-56 UNC

56

3-48 UNC

48

4-40 UNC

40

5-40 UNC

40

6-32 UNC

32

8-32 UNC

32

10-24 UNC

24

12-24 UNC

24

1/4"-20 UNC

20

5/16"-18 UNC

18

3/8"-16 UNC

16

7/16"-14 UNC

14

1/2"-13 UNC

13

9/16"-12 UNC

12

5/8"-11 UNC

11

3/4"-10 UNC

10

7/8"-9 UNC

9

1"-8 UNC

8

1.1/8"-7 UNC

7

1.1/4"-7 UNC

7

1.3/8"-6 UNC

6

1.1/2"-6 UNC

6

1.3/4"-5 UNC

5

2"-4 1/2 UNC

4,5

2.1/4"-4 1/2 UNC

4,5

2.1/2"-4 UNC

4

2.3/4"-4 UNC

4

3"-4 UNC

4

3.1/4"-4 UNC

4

3.1/2"-4 UNC

4

3.3/4"-4 UNC

4

4" - 4 UNC

4

Pitch mm

0,397 0,453 0,529 0,635 0,635 0,794 0,794 1,058 1,058 1,270 1,411 1,587 1,814 1,954 2,117 2,309 2,540 2,822 3,175 3,628 3,628 4,233 4,233 5,080 5,644

5,644

6,350 6,350 6,350 6,350 6,350 6,350 6,350

Tapping Drill Size

mm

1,50 1,80 2,10 2,35 2,65 2,85 3,50 4,00 4,65 5,35 6,80 8,25 9,65 11,15 12,60 14,05 17,00 20,00 22,85 25,65 28,85 31,55 34,70 40,40 46,30

52,65

58,50 64,75 71,10 77,45 83,80 90,15 96,50

FOR INFORMATION PURPOSES ONLY ?Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley,

West Midlands, DY2 0XW, United Kingdom T: +44 (0) 1384 217 600 F: +44 (0) 1384 217 606 fastenernetwork.co.uk

Fastener Thread Pitch and Tapping Drill Guide

UNF - Unified National Fine Thread 60? Thread Angle ANSI B1.1

Nominal Diameter

TPI

0-80 UNF

80

1-72 UNF

72

2-64 UNF

64

3-56 UNF

56

4-48 UNF

48

5-44 UNF

44

6-40 UNF

40

8-36 UNF

36

10-32 UNF

32

12-28 UNF

28

1/4"-28 UNF

28

5/16"-24 UNF

24

3/8"-24 UNF

24

7/16"-20 UNF

20

1/2"-20 UNF

20

9/16"-18 UNF

18

5/8"-18 UNF

18

3/4"-16 UNF

16

7/8"-14 UNF

14

1"-12 UNF

12

1 1/8" - 12 UNF

12

1.1/4"-12 UNF

12

1.3/8"-12 UNF

12

1.1/2"-12 UNF

12

Pitch mm

0,317 0,353 0,397 0,453 0,529 0,577 0,635 0,705 0,794 0,907 0,907 1,058 1,058 1,270 1,270 1,411 1,411 1,587 1,814 2,117 2,117 2,117 2,117 2,117

Tapping Drill Size

mm

1,25 1,55 1,90 2,15 2,40 2,70 2,95 3,50 4,10 4,70 5,50 6,90 8,50 9,90 11,50 12,90 14,50 17,50 20,40 23,25 26,50 29,50 32,75 36,00

FOR INFORMATION PURPOSES ONLY ?Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley,

West Midlands, DY2 0XW, United Kingdom T: +44 (0) 1384 217 600 F: +44 (0) 1384 217 606 fastenernetwork.co.uk

Fastener Thread Pitch and Tapping Drill Guide

UNEF - Unified Extra Fine Thread 60? Thread Angle ANSI B1.1

Nominal Diameter

TPI

12-80 UNEF

32

1/4"-32 UNEF

32

5/16"-32 UNEF

32

3/8"-32 UNEF

32

7/16"-28 UNEF

28

1/2"-28 UNEF

28

9/16"-24 UNEF

24

5/8"-24 UNEF

24

11/16"-24 UNEF

24

3/4"-20 UNEF

20

13/16"-20 UNEF

20

7/8"-20 UNEF

20

15/16"-20 UNEF

20

1" - 20 UNEF

20

1.1/16"-18 UNEF

18

1.1/8"-18 UNEF

18

1.1/4"-18 UNEF

18

1.5/16"-18 UNEF

18

1.3/8"-18 UNEF

18

1.7/16"-18 UNEF

18

1.1/2"-18 UNEF

18

1.9/16"-18 UNEF

18

1.5/8"-18 UNEF

18

1.11/16"-18 UNEF

18

Pitch mm

0,794 0,794 0,794 0,794 0,907 0,907 1,058 1,058 1,058 1,270 1,270 1,270 1,270 1,270 1,411 1,411 1,411 1,411 1,411 1,411 1,411 1,411 1,411

1,411

Tapping Drill Size

mm

4,80 5,70 7,25 8,85 10,35 11,80 13,40 15,00 16,60 18,00 19,60 21,15 22,70 24,30 25,80 27,35 30,55 32,10 33,70 35,30 36,90 38,55 40,10

41,60

FOR INFORMATION PURPOSES ONLY ?Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley,

West Midlands, DY2 0XW, United Kingdom T: +44 (0) 1384 217 600 F: +44 (0) 1384 217 606 fastenernetwork.co.uk

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