Thread Standards

Thread Measurements Connection Ø (mm) L (mm)
Hose Connection
Standard hose bard for hose clamp
hose connection 6.3 mm (1/4")
8 mm (5/16")
10 mm (3/8")
13 mm (1/2")
18 mm (5/8")
-
-
-
-
-
18.0
18.0
21.0
21.0
21.0
Stream-Line Connection
Hose bard with nut cap for reusable and safe hose clamping
stream line connection 5 x 8 mm
6.5 x 10 mm
8 x 12 mm
9.5 x 13.5 mm
11 x 16 mm
-
-
-
-
-
15.0
17.0
19.0
21.0
25.0
CEJN-Lock Connection
For special non-clamping hose
CEJN Lock 1/4"
3/8"
1/2"
-
-
-
19.0
23.0
26.0
UNF Thread Connection
Unified threads according to ISO 68, ANSI B1.1

Male:
ie. 9/16"-18 UNF

Female:
ie. 7/16"-20 UNF

Female, SEA O-Ring Boss
UNF male
UNF Female
Male Thread
7/16"-20 UNF
7/8"-14 UNF



Female Thread
7/16"-20 UNF
9/16"-18 UNF
3/4"-16 UNF
1 1/16"-16 UNF
1 5/16"-12 UNF

11.0
22.0




9.8
12.9
17.5
26.8
33.1

13.3
15.5




11.5
12.7
14.3
19.0
19.0
Metric Thread Connection
Metric threads according to ISO 68/ISO 724

Male:
ie. M16x1.5

Female:
ie. M16x1.5
Metric male
Metric female
Male Thread
M10x1.25
M12x1.5
M14x1.5
M16x1.5
M22x1.5

Female Thread
M16x1.5


9.8
11.85
13.85
15.85
21.85


14.5

9.0
13.0
13.0
8.81
15.7


9.0
R/Rc Thread Connection
Conical Pipe Thread Connection According to ISO 7/1
(other common descriptions are BSPT, Kr)

Male:
ie. R 1/4"

Female:
ie. Rp 1/4" (parallel)
ie. Rc 1/4" (taper)
R male
RC female
Male Thread
R 1/8"
R 1/4"
R 3/8"
R 1/2"
R 3/4"

Female Thread
Rc 1/8"
Rc 1/4"
Rc 3/8"
Rc 1/2"
Rc 3/4"

10.2
13.6
17.2
21.7
27.1


8.3
11.0
14.5
18.0
23.5

7.4
11.0
11.0
15.0
16.3


7.4
11.0
11.4
15.0
16.3
G Thread Connection
Cylidrical Pipe Thread Connection According to ISO 228/1
(other common descriptions are BSP, R)

Male:
ie. G 1/4"

Female (ISO 1179):
ie. G 1/4"
G thread
G thread female
Male Thread
G 1/8"
G 1/4"
G 3/8"
G 1/2"
G 3/4"

Female Thread
G 1/8"
G 1/4"
G 3/8"
G 1/2"
G 3/4"

9.6
13.0
16.5
20.8
26.3


8.75
11.8
15.25
19.0
24.5

8.0
10.0
10.0
12.0
12.0


7.4
11.0
11.4
15.0
16.3
NPT Thread Connection
National Pipe Thread American Standard According to ANSI/ASME B 1.20.1

Male:
ie. 1/4" NPT

Female:
ie. 1/4" NPT
NPT male
NPT female
Male Thread
1/8" NPT
1/4" NPT
3/8" NPT
1/2" NPT
3/4" NPT

Female Thread
1/8" NPT
1/4" NPT
3/8" NPT
1/2" NPT
3/4" NPT

10.5
14.0
17.5
21.8
27.1


8.5
11.0
14.5
18.0
23.0

6.7
10.2
10.4
13.6
13.9


6.9
10.0
10.3
13.6
14.1