Dimensions

Helix angle in Head = 1° 25'

D1

D2

D3

D4

D5 max

L1

L2

P

?

Allowable Component Lead

inches

3.470

1.100

1

0.670

3.681

2.990

2.720

0.120

60°

Angle = 0° 50' - 2° 0'

mm

88

28

25

17

93.5

76

69

3

The following Thread Rolls may be ordered as standard on the A23 head

ISO Metric Fine

Unified Fine UNF

Unified Fine UNF

Whitworth Fine BSF

Whitworth Fine BSF

Nominal Size x Pitch mm

M 8.0 - M 10.0 x 0.5

Nominal Size x TPI

Nominal Size x TPI

M 8.0 - M 10.0 x 0.75

5/16 - 3/8 x 40

… continued

M 10.0 - M 12.0 x 0.75

5/16 - 3/8 x 36

7/16 - 1/2 x 24

M 10.0 - M 12.0 x 1.0

3/8 - 7/16 x 36

1/2 - 9/16 x 24

M 12.0 - M 14.0 x 1.0

7/16 - 1/2 x 36

9/16 - 5/8 x 24

M 14.0 - M 16.0 x 1.0

1/2 - 9/16 x 36

3/4* x 24

M 16.0 - M 18.0* x 1.0

5/16 - 3/8 x 32

1/2 - 9/16 x 22

M 18.0* - M 20.0* x 1.0

3/8 - 7/16 x 32

9/16 - 5/8 x 22

M 14.0 - M 16.0 x 1.25

7/16 - 1/2 x 32

3/4* x 22

M 16.0 - M 18.0* x 1.5

1/2 - 9/16 x 32

1/2 - 9/16 x 20

M 18.0* - M 20.0* x 1.5

9/16 - 5/8 x 32

9/16 - 5/8 x 20

M 20.0* - M 22.0* x 1.5

7/16 - 1/2 x 28

11/16* - 3/4* x 20

1/2 - 9/16 x 28

9/16 - 5/8 x 18

9/16 - 5/8 x 28

3/4* x 18

7/16 - 1/2 x 26

3/4* x 16

Whitworth Pipe BSP

1/2 - 9/16 x 26

3/4* x 14

9/16 - 5/8 x 26

Nominal Size x Pitch mm

3/4* x 26

G 1/8 x 28

continued …

G 1/4 x 19

G 3/8* x 14

* For short threads up to 0.748" length including thread run out.