Malleable cast iron backnut (Recessed) is hexagonal nuts with female threaded connection, and it is used to tighten nipple or other pipe joint, so to avoid slippage.
|Size||A (mm)||Ref. No.|
|1/2″ / DN15 / 21.3mm||7.9||M2101|
|3/4″ / DN20 / 26.9mm||8.6||M2102|
|1″ / DN25 / 33.7mm||9.7||M2103|
|1-1/4″ / DN32 / 42.4mm||10.7||M2104|
|1-1/2″ / DN40 / 48.3mm||11.9||M2105|
|2″ / DN50 / 60.3mm||13.5||M2106|
|4″ / DN100 / 114.3mm||20.3||M2107|
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