AAP Galvanised Malleable Iron Backnut, 1-1/4"

This AAP galvanised malleable iron backnut is a hot dip galvanised fitting with BSP threads. It is supplied in 9 sizes, 1/2" (15mm) to 4" (100mm). A backnut is a flat hexagon nut threaded inside. It is tightened against a fitting, panel or bracket to lock a threaded pipe or fitting in place. A is the thickness and B the width.

These fittings are made to EN 10242:1994, in blackheart malleable cast iron and delivered hot dip galvanised. Each fitting is pressure tested to EN 10242 at a minimum hydrostatic pressure of 2068 kPa (equivalent to a minimum pneumatic pressure of 500 kPa) without leakage. Recommended maximum working pressure is 1379 kPa for water and 1034 kPa for gas, steam and compressed air. Working pressures may also be limited by pressure piping codes or industry regulations.

Where this product is used

• Locking a threaded pipe or fitting against a panel or bracket
• Securing a threaded nipple through a tank or wall
• General galvanised threaded pipework

Features

• 9 sizes, 1/2" (15mm) to 4" (100mm)
• Malleable iron, hot dip galvanised, EN 10242:1994
• BSP threads
• Test pressure 2068 kPa

Key specifications

Choosing the right option

Choose the size to match your pipework. These fittings are BSP threaded, so check that your pipe or fitting is BSP and not NPT before you order.

Related AAP products: AAP Galvanised Malleable Iron Hexagon Nipple, AAP Galvanised Malleable Iron Socket, AAP Galvanised Malleable Iron Square Head Plug, AAP Medium Galvanised Steel Pipe Piece, BSP Taper Both Ends.