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Stopping Plugs Types 477 and 475, Flameproof EExd IIC
477 and 475 Stopping Plug Selection Table
Size
Ref.
Thread Size
Hexagon Key
Across Flats
'K'
Metric
NPT
A
M20
¾"
10.0
B
M25
1"
10.0
C
M32
1¼"
14.0
C2
M40
1½"
14.0
D
M50
2"
17.0
E
M63
2½"
17.0
F
M75
3"
19.0

Alternative thread types and sizes are also available.
All metric threads are 1.5mm pitch
Stopping Plug Type 187, Increased Safety
187 Stopping Plug Selection Table
Size
Ref.		 Thread Size
'N'
'S' Hexagon Key
Across Flats
'K'
Metric
O M16 25.4 10.1
A M20 30.0 10.1
B M25 35.0 10.1
C M32 42.0 10.1
C2 M40 54.0 10.1
D M50 63.5 10.1
E M63 76.2 10.1
F M75 89.0 10.1

Alternative thread sizes and types are available in brass material.
All Metric threads are 1.5mm pitch.
Stopping Plug Type 375, Increased Safety EExe II
375 Stopping Plug Selection Table

Thread Size
'N'
'S'
Hexagon Key
Across Flats
'K'
Metric
M16
25.0
10.1
M20
30.0
10.1

All metric threads are 1.5mm pitch.
 
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Hawke Cable Glands Ltd
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OL7 0NA, U.K
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77060, U.S.A.
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