SKC THREAD TOOL MFG. CO.,LTD.
SPIRAL GROOVES MAKE IT EASY TO
OUST METAL WASTE WHEN THREADED
BSW NF N.C METRIC

Spiral grooves make it easy to oust metal waste when threaded.
DIA THREAD PER INCH OVERALL THREAD SHANK SQUARE
3
LENGTH
SQUARE
4
LENGTH
BSW NF NC LENGTH LENGTH
3/16"
1/4"
5/16"
3/8"
7/16"
24
20
18
16
14
32
28
24
24
20
24
20
18
16
14
60
62
70
75
80
22
24
30
35
38
5.5
6
6.1
7
8
7
7
8
9
10
4.5
4.5
5
5.5
6
1/2"
9/16"
5/8"
3/4"
7/8"
12
12
11
10
9
20
18
18
16
14
13
12
11
10
9
85
90
95
105
115
42
42
45
50
55
9
10.5
12
14
17
11
12
14
16
18
7
8
9
11
13
1"
1 1/8"
1 1/4"
1 3/8"
1 1/2"
8
7
7
6
6
14
12
12
12
12
8
7
7
6
6
125
135
145
155
160
60
65
70
75
78
20
22
24
26
30
20
22
24
26
30
15
17
19
21
23
3M
4M
5M
6M
7M
0.6
0.75
0.90
1.0
1.0
0.35
0.50
0.50
0.75
0.75
0.50
0.70
0.80
0.50
0.50
46
52
60
62
65
18
20
22
24
26
4
5
5.5
6
6.2
6
7
7
7
8
3.2
4
4.5
4.5
5
8M
10M
12M
14M
16M
1.25
1.50
1.75
2.0
2.0
1.0
1.25
1.50
1.50
1.50
0.75
1.0
1.0
1.0
1.0
70
75
82
88
95
30
32
38
42
45
6.5
7
8.5
10.5
12.5
8
8
9
11
13
5
5.5
6.5
8
10
18M
20M
2.5
2.5
1.50
1.50
1.0
1.0
100
105
48
50
14
15
14
15
11
12



Acme Taps
Tandem  
A INCH
B INCH C INCH D INCH E INCH F INCH @
1/2 - 10 5 2 9/16 2 .367 7/16 .275
5/8 - 8 6 1/4 3 3/16 2 1/2 .480 9/16 .360
3/4 - 6 7 15/16 4 5/16 3 .573 5/8 .430
7/8 - 6 8 5/8 4 3/8 3 1/2 .697 3/4 .524
1 - 5
10 1/8 5 1/4 4 .730 7/8 .547
1 1/8 - 5 10 3/4 5 1/4 4 1/2 .862 1 .646
1 1/4 - 5 11 1/8 5 1/4 4 3/4 .959 1 1/8 .719
1 3/8 - 4 12 1/4 5 7/8 5 1/8 1.108 1 1/4 .831
1 1/2- 4 12 5/8 5 7/8 5 1/2 1.233 1 1/4 .925
Roughing Finishing
COPYRIGHT(C) 2001, SKC THREAD TOOL MFG. CO.,LTD.ALL RIGHTS RESERVED.