KOYO INDUSTRIES 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) 2007, KOYO INDUSTRIES CO.,LTD.ALL RIGHTS RESERVED.
P.O.BOX: NO.79 MINAMI OSAKA JAPAN
OFFICE: NO.101 TOJUSO-KOKUMACHI BLDG.
2-2 KOKUMACHI 2CHOME, CHUO-KU, OSAKA, JAPAN
TEL:81-6-6941-9541 FAX: 81-6-6941-954