Page 679 - Yamawa_European_Catalogue_YEU21

10. Tap Thread Limits (JIS, DIN, ANSI)

Intro

Unified Threads (UNC/UNF) Unit: mm
Major Pitch Diameter Minor Major Pitch Diameter Minor
Kind diameter diameter Kind diameter diameter
Size of Class Upper Lower Size of Class Upper Lower SP
tap Basic Basic Tolerance Tolerance Tolerance Basic tap Basic Basic Tolerance Tolerance Tolerance Basic
Size Size (μm) Size Size Size (μm) Size
(μm) + (μm) + (μm) + (μm) +
P1 20 0 20 P2 40 20 20
P2 40 20 20 P3 60 40 20
SL
P3 60 40 20 P4 80 60 20
3B 29 11 18 3B 37 17 20
cutting tap 2BX 7.938 7.249 46 20 26 6.792 cutting tap 2BX 11.112 9.934 56 27 29 9.149
2B
2B
81
52
29
26
40
66
GH2 25.4 12.7 12.7 GH3 38.1 25.4 12.7 PO
5/16-24UNF GH3 38.1 25.4 12.7 7/16-14UNC GH4 50.8 38.1 12.7
GH4 50.8 38.1 12.7 GH5 63.5 50.8 12.7
GH5 63.5 50.8 12.7 GH6 76.2 63.5 12.7
76
3BX 64 51 13 3BX 102 64 12 ST
forming tap G6 7.938 7.249 63.5 50.8 12.7 6.792 forming tap G8 11.112 9.934 102 50.8 12.7 9.149
76
89
2BX
64
12
13
2BX
76
12
89
64
13
H5
63.5
H5
H7 88.9 76.2 12.7 H7 88.9 76.2 12.7
ROLL
P2 40 20 20 P1 20 0 20
P3 60 40 20 P2 40 20 20
P4 80 60 20 P3 60 40 20
3B 34 16 18 P4 80 60 20 CARBIDE
cutting tap 2BX 9.525 8.494 53 25 28 7.805 3B 32 12 20
2B
50
28
22
29
2B
51
78
GH3 38.1 25.4 12.7 cutting tap 2BX 11.112 10.287 76 47 29 9.738
3/8-16UNC GH4 50.8 38.1 12.7 GH2 25.4 12.7 12.7
GH5 63.5 50.8 12.7 7/16-20UNF GH3 38.1 25.4 12.7 LONG
GH6 76.2 63.5 12.7 GH4 50.8 38.1 12.7
76
3BX 102 64 12 GH5 63.5 50.8 12.7
forming tap G8 9.525 8.494 102 50.8 12.7 7.805 3BX 76 64 12 HAND
76.2
12.7
63.5
GH6
13
2BX
89
13
89
TAPS
2BX
89
13
76
63.5
H5
H7 88.9 76.2 12.7 forming tap G7 11.112 10.287 89 76 13 9.738
P1 20 0 20 H5 63.5 50.8 12.7
P2 40 20 20 H7 88.9 76.2 12.7
EG (STI)
P3 60 40 20 P2 40 20 20
3B 29 11 18 P3 60 40 20
cutting tap 2BX 9.525 8.837 48 20 28 8.379 P4 80 60 20 SPECIAL
2B
68
20
38
40
18
28
3B
GH2 25.4 12.7 12.7 2B 12.700 11.430 58 28 30 10.584 THREADS,
GAUGES
3/8-24UNF GH3 38.1 25.4 12.7 cutting tap 2BX 83 53 30
GH4 50.8 38.1 12.7 GH3 38.1 25.4 12.7
GH5 63.5 50.8 12.7 1/2-13UNC GH4 50.8 38.1 12.7 THREAD
3BX 64 51 13 GH5 63.5 50.8 12.7 MILLS
forming tap G7 9.525 8.837 63.5 50.8 12.7 8.379 3BX 114 102 12
GH6
12.7
76
89
63.5
13
2BX
76.2
76
89
76
13
64
12
2BX
H5
H7 88.9 76.2 12.7 forming tap G9 12.700 11.430 114 102 12 10.584 DIES
H5
H7 63.5 50.8 12.7
88.9
12.7
76.2
CENTER
DRILLS
Technical
info
677