These are Black Malleable Backnuts. This fitting has been manufactured from galvanised malleable iron, designed to be durable, high ductility and corrosion resistant.
Please note: When measuring be sure to minus approximately ¼” to find the BSP thread size. For example, if you measure 1”, you will need a ¾” BSP thread.
Malleable fittings are manufactured in accordance with pipe threads DIN 2999, NEN 325.
Specifications
Product Group: Black Malleable Iron
Product Type: Black Malleable Backnuts
Product Code: MI310/11
Material: Black Malleable Iron
Working Pressure: 25 bar / 320 PSI
QUICK GUIDE TO PIPE AND THREAD SIZES |
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PIPE OD |
METRIC |
IMPERIAL |
|
BSP THREADS |
MALE OD |
12mm |
12mm |
- |
|
1/4" |
13MM |
16mm |
16mm |
- |
|
3/8" |
17MM |
17.1mm |
- |
3/8" |
|
1/2" |
21MM |
20mm |
20mm |
- |
|
3/4" |
26.5MM |
21.4mm |
- |
1/2" |
|
1" |
33.6MM |
25mm |
25mm |
- |
|
11/4" |
42MM |
26.7mm |
- |
3/4" |
|
11/2" |
48MM |
32mm |
32mm |
- |
|
2" |
60MM |
33.6mm |
1" |
|
21.2" |
75mm |
|
40mm |
40mm |
- |
|
3" |
88mm |
42.2mm |
- |
11/4" |
|
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48.3mm |
- |
11/2" |
|
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50mm |
50mm |
- |
|
||
60.3mm |
- |
2" |
|
||
63mm |
63mm |
- |
|
||
75mm |
75mm |
2/12" |
|
||
88.9mm |
- |
3" |
|
||
90mm |
90mm |
- |
|
||
110mm |
110mm |
- |
|
||
114.3mm |
- |
4" |
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||
160mm |
160m |
- |
|
||
168.3mm |
- |
6" |
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||
200mm |
200m |
- |
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