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V6
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
4300 Catalog
Appendix
Tube End Connections
Thread Size Guide — Metric, BSPP and JIS Threads
Table V8—Tube End Connections
1) Not preferred for high pressure applications.
2) Not preferred sizes. Use 10mm, 20mm and 30mm sizes in place of 9mm, 19mm and 32mm sizes, respectively.
3) Covered in ISO 8434-1. Non-standard with Parker TFDE (Ermeto).
4) Not part of DIN or ISO standards, but offered by Parker TFDE (Ermeto).
5) ISO 228-1 G threads and JIS B 0202 G or PF threads can be interchanged. “A” and “B” indicate different tolerance classes
on the male threads, “A” having tighter tolerances than “B”.
6) Non-preferred size.
Tube O.D. or
Metric 24° cone
Metric 24° cone
60° Cone
30° Flare and
Adapter Size
Flareless
60° Cone
Flareless
Weld Nipple
DIN 3861
DIN 3865
JIS B2351
“EO” and “EO-2”
“JIS”
BS 5200
JIS B8363
LL Series
L Series
S Series
Metric
ISO 228-1
Metric
Metric
Metric
ISO 261
ISO 228-1
(JIS B 0202)
(mm)
ISO 261
ISO 261
ISO 261
(JIS B0207)
(BSPP)
5)
(BSPP)
5)
4
M8 x 1
5
M10 x 1
3)
6
M10 x 1
M12 x 1.5
M14 x 1.5
M12 x 1.5
G 1/8 A
G 1/4 B
8
M12 x 1
M14 x 1.5
M16 x 1.5
M14 x 1.5
G 1/4 A
9
2)
G 3/8 B
10
M14 X 1
4)
M16 x 1.5
M18 x 1.5
M16 x 1.5
G 3/8 A
12
M16 x 1
4)
M18 x 1.5
M20 x 1.5
M18 x 1.5
G 1/2 A
G 1/2 B
14
M22 x 1.5
15
1)
M22 x 1.5
16
M24 x 1.5
M24 x 1.5
G 5/8 A
6)
18
1)
M26 x 1.5
19
2)
G 3/4 B
20
M30 x 2
M28 x 1.5
G 3/4 A
22
1)
M30 x 2
25
M36 x 2
M35 x 1.5
G 1 A
G 1 B
28
1)
M36 x 2
30
M42 x 2
M40 x 1.5
G 1-1/4 A
32
2)
G 1-1/4 B
35
1)
M42 x 2
38
M52 x 2
M48 x 1.5
G 1-1/2 A
G 1-1/2 B
42
1)
M52 x 2
50
G 2 A
G 2 B
Selection of Fitting Type
Dimensions and pressures for reference only, subject to change.