Page 676 - 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
SP Size of Class Upper Lower Size of Class Upper Lower
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 1.524 1.318 25 10 15 1.181 P1 25 10 15
cutting tap 2B 26 11 15 cutting tap 2B 2.515 2.172 32 14 18 1.941
SL 3B 16 6 10 3B 20 8 12
0
0
GH1
12.7
25.4
12.7
GH2 12.7 12.7 12.7 GH1 12.7 12.7 12.7
GH2
25.4
No.0-80UNF
3BX 1.524 1.318 25 13 12 1.181 No.3-48UNC 3BX 38 25 13
PO 2BX 38 25 13 2BX 51 38 13
forming tap G3 38 25 13 forming tap G4 2.515 2.172 51 38 13 1.941
64
G5
13
51
64
51
G5
13
H2 25.4 12.7 12.7 H2 25.4 12.7 12.7
ST P1 1.854 1.598 25 10 15 1.425 H3 38.1 25.4 12.7
cutting tap GH1 12.7 12 12.7 cutting tap 3B 2.515 2.220 19 13 12 2.024
15
7
10
3B
10
25
17
P1
28
2B
16
7
18
31
2B
0
GH2 25.4 12.7 12.7 GH1 12.7 0 12.7
ROLL No.1-64UNC
3BX 1.854 1.598 25 13 12 1.425 GH2 25.4 12.7 12.7
No.3-56UNF 3BX 38 25 13
forming tap G3 38 25 13 2BX 51 38 13
38
25
2BX
13
CARBIDE G5 64 51 13 forming tap G4 2.515 2.220 51 38 13 2.024
H2 25.4 12.7 12.7 H2 25.4 12.7 12.7
P1 1.854 1.626 25 10 15 1.473 H3 38.1 25.4 12.7
cutting tap 2B 28 12 16 P2 40 25 15
17
P1
10
25
10
15
7
3B
LONG GH1 12.7 0 12.7 P3 55 40 15
GH2 25.4 12.7 12.7 3B 22 10 12
No.1-72UNF
3BX 1.854 1.626 25 13 12 1.473 cutting tap 2B 2.845 2.433 34 16 18 2.156
18
2BX
31
49
HAND forming tap 2BX 38 25 13 GH2 25.4 12.7 12.7
13
38
G3
25
TAPS G5 64 51 13 GH3 38.1 25.4 12.7
H2 25.4 12.7 12.7 No.4-40UNC GH4 50.8 38.1 12.7
P1 2.184 1.890 25 10 15 1.694 3BX 38 25 13
cutting tap GH1 12.7 13 12.7 G4 51 38 13
EG (STI) 3B 19 7 12 2BX 51 38 13
30
2B
17
13
0
64
51
G5
GH2 25.4 12.7 12.7 forming tap G6 2.845 2.433 76 64 12 2.156
SPECIAL 3BX 2.184 1.890 38 25 13 1.694 G7 89 76 13
THREADS, No.2-56UNC 2BX 51 38 13 H3 38.1 25.4 12.7
GAUGES G4 51 38 13 H5 63.5 50.8 12.7
forming tap G5 64 51 13 P1 25 10 15
THREAD G7 89 76 13 3B 20 8 12
MILLS H2 25.4 12.7 12.7 cutting tap 2B 2.845 2.502 32 14 18 2.271
H3 38.1 25.4 12.7 GH1 12.7 0 12.7
P1 2.184 1.928 25 10 15 1.755 GH2 25.4 12.7 12.7
cutting tap 2B 29 12 17 2BX 51 38 13
DIES 3B 17 6 11 No.4-48UNF 3BX 38 25 13
GH1
0
13
GH2 12.7 12.7 13 forming tap G4 2.845 2.502 51 38 13 2.271
51
64
25.4
13
G5
No.2-64UNF
3BX 2.184 1.928 38 25 13 1.755 H3 38.1 25.4 12.7
CENTER 2BX 51 38 13 H5 63.5 50.8 12.7
forming tap G4 25.4 12.7 12.7
DRILLS
51
13
38
H2
H3 38.1 25.4 12.7
Technical
info
674