97 / 235
www.dklok.com
8
All dimensions are in millimeters unless otherwise specified and only for reference subject to change.
Thread Fittings - Standard Rating
Part
Number
ISO 228-1
E
mm
H
mm
D
mm
DGC- 2
1/8
9.9
1.0
15.0
DGC- 4
1/4
13.2
1.5
19.1
DGC- 6
3/8
16.8
1.5
23.1
DGC- 8
1/2
21.1
1.5
26.9
DGC-12
3/4
26.7
2.0
33.0
DGC-16
1
33.3
2.0
40.1
Part
Number
P
NPT
in.
L
mm
E
mm
H
Hex
mm
GCG- 2N
1/8
20.57
8.9
14.2
GCG- 4N
1/4
30.22
10.87
19.05
GCG- 6N
3/8
33.27
15.0
22.2
GCG- 8N
1/2
39.62
18.7
26.9
GCG-12N
3/4
41.14
23.5
33.3
GCG-16N
1
50.8
29.7
41.2
Part
Number
P
NPT
in.
P1
Reduced
NPT in.
L
mm
E
mm
H
Hex
mm
GCGR 4- 2N
1/4
1/8
31.2
8.9 19.05
GCGR 6- 4N
3/8
1/4
34.8 11.7 22.2
GCGR 8- 2N
1/2
1/8
39.4
8.7
26.9
GCGR 8- 4N
1/2
1/4
44.2 11.7 26.9
GCGR 8- 6N
1/2
3/8
45.0 15.0 26.9
GCGR 12- 4N
3/4
1/4
45.7 11.7 33.3
GCGR 16-12N
1
3/4
57.0 23.5 41.2
Part
Number
P
NPT
in.
L
mm
E
mm
H
Hex
mm
H1
Wrench
Flat
mm
GJU- 2N
1/8
45.7
6.9
28.6 23.8
GJU- 4N
1/4
59.4
9.1
34.9 30.2
GJU- 6N
3/8
63.5 13.2 38.1 33.3
GJU- 8N
1/2
68.6 15.7 44.5 41.3
GJU-12N
3/4
79.2 22.4 50.8 47.6
GJU-16N
1
90.4 26.2 63.5 60.3
Part
Number
P
NPT
in.
L
mm
B
mm
C
mm
H
mm
GPB - 2N
1/8
10.4
7.4
9.4
4.76
GPB - 4N
1/4
15.5 12.4 12.1 6.35
GPB - 6N
3/8
15.0 11.9 15.7 7.93
GPB - 8N
1/2
19.3 16.2 19.3 9.52
Part
Number
P
SAE/MS
Thread
L
mm
B
mm
C
mm
H
mm
Uniform
O-ring
Size
GPA- 4U
7/16-20 11.4 9.1 14.2 4.76 -904
GPA- 6U
9/16-18 12.2 9.9 17.5 6.35 -906
GPA- 8U
3/4-16 14.2 11.2 22.4 7.93 -908
GPA-12U
1 1/16-12 19.1 15.0 31.8 14.28 -912
GPA-16U
1 5/16-12 19.1 15.0 38.1 15.87 -916
HEX COUPLING
GCG
Female NPT both ends
UNION BALL JOINT
GJU
Female NPT both ends
HOLLOW HEX PLUG
GPA
Male SAE/MS Straight Thread
HEX REDUCING COUPLING
GCGR
Female NPT to reduced female NPT
ISO PARALLEL COPPER GASKET
DGC
For ISO Parallel male thread
HOLLOW HEX PLUG
GPB
Male NPT