METRIC

M3

M4

M5

M6

M8

Key A/F

2mm

2.5mm

3mm

4mm

5mm

Length

  8mm

18p

18p

-

-

-

10mm

21p

20p

20p

-

-

12mm

23p

23p

-

23p

30p

16mm

33p

28p

28p

28p

32p

20mm

-

-

30p

32p

34p

25mm

-

-

32p

-

-

30mm

-

-

46p

46p

48p

40mm

-

-

-

-

56p

UNF

10/32

1/4"

5/16"

3/8"

UNC

4/40

6/32

8/32

10/24

1/4"

5/16"

3/8"

Key A/F

1/8"

5/32"

3/16"

7/32"

Key A/F

1/16"

5/64"

3/32"

1/8"

5/32"

3/16"

7/32"

Length

Length

1/4"

35p

-

-

-

1/4"

-

35p

36p

-

-

-

-

3/8"

40p

-

-

-

3/8"

47p

35p

37p

33p

-

-

-

1/2"

-

44p

-

-

1/2"

-

49p

40p

33p

30p

49p

-

5/8"

42p

-

64p

-

5/8"

-

-

-

62p

-

-

-

3/4"

43p

55p

-

98p

3/4"

-

-

-

57p

33p

59p

57p

1"

-

-

69p

105p

1"

-

-

-

75p

42p

82p

71p

1 1/4"

-

-

-

-

-

-

115p