Single Head

Double Head

CODE

Opening mm

Overall Length

For Bolt Size

CODE

Opening mm

Overall Length

For Bolt Size

Metric

Whitworth

Metric

Whitworth

611026

27

28

29

30

10

12

13

14

17

195

195

210

210

250

M  6

-

-

M10

W3/16

W1/4

-

W5/16

-

611051

52

53

54

55

10x12

10x13

10x14

12x14

13x17

195

210

210

210

250

M6 x-

M6 x-

M6 x-

-

-xM10

W3/16 x W1/4

W3/16 x   -

W3/16 x W5/16

W1/4 x W5/16

-

611031

32

33

34

35

19

21

22

24

26

270

290

290

310

330

M12

-

M14

M16

-

W7/16

W1/2

-

-

W5/8

611056

57

58

59

60

14x17

17x19

17x21

19x22

19x24

250

290

290

290

330

-xM10

M10 x M12

M10 x  -

M12 x M14 M12 x M14

W5/16 x  -

-  x W7/16

-  x W1/2

W7/16 x -

W7/16 x -

611036

37

38

39

40

27

30

32

35

36

330

350

370

410

410

M18

M20

-

M22

M24

-

-

W3/4

W7/8

-

611061

62

63

64

65

21x26

21x27

22x24

22x27

24x27

330

330

330

330

330

-

-  x M18

M14 x M16

M14 x M18 M16 x M18

-  x W5/8

-

-

-

-

611041

42

41

46

450

460

M27

M30

W1

W1-1/8

611066

67

68

69

24x30

26x32

27x30

30x32

370

370

370

370

M16 x M20

-

M18 x M20 M20x   -

-

W5/8 x W3/4

-

-  x W3/4