AAP Galvanised Malleable Iron Backnut, 1-1/2"
Available
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
| Specification | Detail |
|---|---|
| Brand | AAP |
| Product | Galvanised malleable iron backnut |
| Finish | Hot dip galvanised, as prescribed by EN 10242 |
| Material | Blackheart malleable cast iron to ASTM A197 and ASTM A47, hot dip galvanised |
| Thread | BSP (British Standard Pipe) thread: parallel internal (Rp) and taper external (R), cut to AS 1722.1 and ISO 7-1 |
| Ends | Female (internal) thread, flat hexagon |
| Applicable standard | EN 10242:1994, threaded pipe fittings in malleable cast iron |
| Recommended working pressure | 1379 kPa water, 1034 kPa gas, steam and compressed air |
| Test pressure | 2068 kPa hydrostatic (equivalent to 500 kPa pneumatic minimum) |
| Sizes | 1/2" (15mm) to 4" (100mm) (9 sizes) |
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.
| Option | Part number | SKU |
|---|---|---|
| 1/2" | LBN15 | A0076849 |
| 1" | LBN25 | A0076851 |
| 1-1/4" | LBN32 | A0076852 |
| 1-1/2" | LBN40 | A0076853 |
| 2" | LBN50 | A0076854 |
| 2-1/2" | LBN65 | A0076855 |
| 3/4" | LBN20 | A0076850 |
| 3" | LBN80 | A0076856 |
| 4" | LBN94 | A0076857 |
Couldn't load pickup availability
Secure Checkout. We do not store credit card details
AAP Galvanised Malleable Iron Backnut: 1-1/2"
SKU: A0076853 | Model: LBN40
AAP LBN40: AAP Galvanised Malleable Iron Backnut, 1-1/2". Pipe Size (inch): 1-1/2. Pipe Size (mm): 40. Thickness (A): 12.1.