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TECHNICAL INFO - Short Machine and Hand Taps - Page 1
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TABLE SHOWS GENERAL DIMENSIONS APPLICABLE TO STANDARD THREAD DESIGNATIONS
NOMINAL DIA d
 THREAD DESIGNATIONS
OVERALL
LENGTH 		LENGTH
OF
THREAD 		LENGTH
OF
NECK		 DIA OF
NECK 		DIA OF
SHANK		 LENGTH
OF
SQUARE 		SIZE
OF
SQUARE		 STYLE TYPES
ABOVE UP TO ISO
METRIC
COARSE 		ISO
METRIC
FINE

UNC

 UNF BSW BSF BA L     d2 d 12 a    
1.40

1.80

2.00 		1.80

2.00

2.80 		M1.6
M1.8
M2
M2.2
M2.5



M2. 5X0.36

No. 1-64
No. 2-56
No. 3-48
No. 0-80
No. 1-72
No. 2-64
No. 3-56		    
10 & 11
9

8,7 & 6
41
41

44.5
8
8

9.5
5.0
5.5

6.0 		 
2.50
2.50

2.80
4
4

5
2.00
2.00

2.24 		1 STRAIGHT
FLUTE
SPIRAL POINT
FLUTELESS
2.80

3.20
3.60
4.00
4.50
5.00
5.60
6.35
7.20
8.00
9.00 		3.20

3.60
4.00
4.50
5.00
5.60
6.35
7.20
8.00
9.00
10.00

M3

M3.5
M4
M4.5


M6
M7
M8
M9
M10

M3x0.35

M3.5x0.35
M4x0.5
M4.5x0.5
M5x0.5

M6x0.75
M7x0.75
M8x1

M10 x1.25		 No. 4-40
No. 5-40
No. 6-32

No. 8-32
No. 10-24
No. 12-24
1/4-20

5/16-18

3/8-24 		No. 4-48
No. 5-44
No. 6-40

No. 8-36
No. 10-32
No. 12-28
1/4-28

5/16-18

3/8-16
1/8-40



3/16-24

1/4-20

5/16-18

3/8-16




3/16-32
7/32-28
1/4-26
9/32-26
5/16-22

3/8-20
5
4

3
2
1
0
48
50
53
53
58
62
66
66
72
72
80
11
13
13
13
16
17
18
18
20
20
22
7
7
8
8
9
9
11
11
13
15
16
2.20
2.50
2.80
3.15
3.60
4.25
4.50
5.30
6.00
7.10
7.50
3.15
3.55
4.00
4.50
5.00
5.60
6.30
7.10
8.00
9.00
10.00
5
5
6
6
7
7
8
8
9
10
11
2.50
2.80
3.15
3.55
4.00
4.50
5.00
5.60
6.30
7.10
8.00 		2

STRAIGHT
FLUTE
SPIRAL POINT
QUICK SPIRAL
FLUTELESS
LONG SHANK MACHINE
10.00
10.60
11.80
13.20
15.00
17.00

21.20
23.60 		10.60
11.80
13.20
15.00
17.00
21.20

23.60
26.50
M11
M12
M14
M16
M18
M20
M22
M24

M12x1.25
M14x1.5
M16x1.5
M18x1.5
M20x1.5
M22x1.5
M24 x2
7/16-14
1/2-13
9/16-12
5/8-11

3/4-10
7/8-9
1-8
7/16-20
1/2-20
9/16-18
5/8-18

3/4-16
7/8-14
1-12
7/16-14
1/2-13
9/16-12
5/8-11
11/16-11
3/4-10
7/8-9
1-8
7/16-18
1/2-16
9/16-16
5/8-14
11/16-14
3/4-12
7/8-11
1-10		   84
85
89
95
102

112
118
130 		22
22
24
26
27

32
34
40 		    7.10
8.00
9.00
11.20
12.50

14.00
16.00
18.00

8
9
10
12
13

14
16
18

5.60
6.30
7.10
9.00
10.00

11.20
12.50
14.00 		3 STRAIGHT
FLUTE
SPIRAL POINT
QUICK SPIRAL
LONG SHANK MACHINE
FLUTELESS
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