DIMENSIONS OF SOCKET - WELD
AND
THREADED UNION (BS3799) (in mm)
Nom. Pipe Size
Pipe End Min
Socket Bore Dia.
Socket Wall Min.
Water Way Bore
Laying Length
Male Flange Min.
Nut Min.
Threads Per 25.4 Max
Bearing Min.
Depth of Socket Min.
Length Assem. Nominal
Clear Assem. Nut
A
B
C
D
E
F
G
H
J
K
L
N
1/8
21.8
10.92
10.67
3.17
6.83
6.43
22.4
19.0
3.17
3.17
16
1.24
9.6
41.1
49.0
¼
21.8
14.22
13.97
3.30
9.85
9.45
22.4
19.0
3.17
3.17
19
1.24
9.6
41.4
49.0
3/8
25.9
17.78
17.53
3.48
13.92
13.51
26.9
20.6
3.43
3.43
14
1.37
9.6
46.0
55.0
½
31.2
21.84
21.59
4.06
17.47
17.07
26.9
20.6
3.68
3.68
14
1.50
9.6
49.0
57.0
¾
37.1
27.18
26.92
4.27
21.79
21.39
31.8
25.4
4.06
4.06
11
1.68
12.7
56.9
67.0
1
45.5
34.04
33.78
4.95
28.14
27.74
34.3
26.2
4.57
4.44
11
1.85
12.7
62.0
79.0
11/4
54.9
42.67
42.42
5.28
35.76
35.36
40.6
32.5
5.33
5.21
11
2.13
12.7
71.1
94.0
11/2
61.5
48.77
48.51
5.54
41.61
41.20
42.2
34.0
5.84
5.59
10
2.31
12.7
75.5
111.0
2
75.2
61.47
61.21
6.05
52.53
52.12
45.3
37.3
6.60
6.35
10
2.69
15.8
86.1
132.0
21/2
91.7
74.17
73.66
7.65
64.72
64.31
61.7
52.1
7.49
7.11
8
3.07
15.8
102.4
148.0
3
109.2
90.17
89.66
8.31
77.67
77.27
63.8
53.6
8.25
8.00
8
3.53
15.8
109.0
175.0
DIMENSIONS OF STEEL PLUG & BUSHINGS (BS 3799) (In mm)
Nominal
Pipe
Size
Length
(Minimim)
A
Plugs Square Head
Plugs Round Head
Hex Plugs & Bushings
Height of
Square
(Minimum)
B
Width
Flats
(Minimum)
C
Nominal
Diameter
of Head
E
Length
(Minimum)
D
Width Flats
(Nominal)
F
Hex Height (Min.)
Bushing
G
Plug
H
1/8''
9.7
6.6
7.1
10.4
35.1
11.2
-
6.4
1/4''
11.2
6.6
9.7
13.5
41.1
15.7
3.0
6.4
3/8''
12.7
7.9
11.2
17.5
41.1
17.5
4.1
7.9
1/2''
14.2
9.7
14.2
21.3
44.5
22.4
4.8
7.9
3/4''
15.7
11.2
15.7
26.9
44.5
26.9
5.6
9.7
1''
19.1
12.7
20.6
33.3
50.8
35.1
6.4
9.7
1-1/4''
20.6
14.2
23.9
42.9
50.8
44.5
7.1
14.2
1-1/2''
20.6
15.7
28.4
48.5
50.8
50.8
7.9
15.7
2''
22.4
17.5
33.3
60.5
63.5
63.5
8.6
17.5
2-2/2''
26.9
19.1
38.1
73.2
69.9
76.2
9.7
19.1
3''
28.4
20.6
42.9
88.9
69.9
88.9
10.4
20.6
4''
31.8
25.4
53.5
114.3
76.2
117.3
12.7
25.4
CAUTIONARY NOTE REGARDING HEX HEAD BUSHINGS: Hex head Bushings of one size reduction should not be used in services wherein they might be subject to harmful and forces other than internal pressures
