Forged Wing Screw (type A)                        ANSI/ASME B18.17

Nomial size

Threads per Inch

Wing Spread

Wing Height

Wing Thickness

Boss Dia.

Boss Height

Practical Screw Lengths

Max

Max

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

4

40

.72

.59

.41

.28

.11

.07

.33

.29

.14

.10

.75

.25

6

32

.91

.78

.47

.34

.14

.10

.43

.39

.18

.14

.75

.25

8

32

.91

.78

.47

.34

.14

.10

.43

.39

.18

.14

.75

.38

10

24 &32

.91

.78

.47

.34

.14

.10

.43

.39

.18

.14

1.00

.38

12

24

1.10

.97

.57

.43

.18

.14

.50

.45

.22

.17

1.00

.38

1/4

20

1.10

.97

.57

.43

.18

.14

.50

.45

.22

.17

1.50

.50

5/16

18

1.25

1.12

.66

.53

.21

.17

.58

.51

.25

.20

1.50

.50

3/8

16

1.44

1.31

.79

.65

.24

.20

.70

.64

.30

.26

2.00

.75

7/16

14

1.94

1.81

1.00

.87

.33

.26

.93

.86

.39

.35

4.00

1.00

1/2

13

1.91

1.81

1.0

.87

.33

.26

.93

.86

.39

.35

4.00

1.00

5/8

11

2.76

2.62

1.44

1.31

.40

.34

1.19

1.13

.55

.51

4.00

1.25

   Forged Wing Screw (type A)                        ANSI/ASME B18.17

Nomial size

Threads per Inch

Wing Spread

Wing Height

Wing Thickness

Boss Dia.

Boss Dia.

Height

Stock Thickness

Practical Screw Lengths

Max

Max

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

6

32

.78

.72

.40

.34

.18

.12

.35

.31

.40

.34

.21

.14

.04

.03

.75

.25

8

32

.78

.72

.40

.34

.18

.12

.35

.31

.40

.34

.21

.14

.04

.03

.75

.38

10

24

.90

.84

.46

.40

.21

.15

.35

.31

.53

.47

.22

.16

.04

.03

1.00

.38

12

24

1.09

1.03

.46

.40

.26

.20

.44

.39

.61

.55

.24

.18

.04

.03

1.00

.38

1/4

20

1.09

1.03

.46

.40

.26

.20

.47

.43

.61

.55

.24

.18

.04

.03

1.50

.50

5/16

18

1.31

1.25

.62

.56

.29

.23

.57

.53

.68

.62

.29

.23

.07

.05

1.50

.50

3/8

16

1.31

1.25

.62

.56

.29

.23

.63

.59

.68

.62

.29

.23

.07

.05

2.00

.75