Brass Lock Nut
Shipping and Delivery
Shipping and Delivery
| Product Type | Delivery Method | Preparation Time | Transport Time | Delivery Time |
|---|---|---|---|---|
| All Parts | Pickup Point | 0 to 3 days | 3 to 6 days | 3 to 9 days |
| All Parts | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 90cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes < 200cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 200cm | Home Delivery | 0 to 6 days | 6 to 10 days | 6 to 16 days |
| Assembled Products | Home Delivery & Pickup Point | 0 to 5 days | (see methods) | 3 to 11 days |
* Tubes longer than 90cm cannot be delivered to a pickup point
For orders of more than 50 units of the same item or more than 100 kg, restocking may exceptionally extend the delivery time by up to 10 working days.
For confirmation of delivery times on specific items, please send us a message
Brass Lock Nut
Brass lock nut to secure a threaded fitting in position. This standard hexagonal lock nut screws onto a male thread to prevent the fitting from loosening. ISO 228-1 BSPP standard.
Brass Lock Nut Description
This hexagonal lock nut screws onto a male thread alongside a main fitting to lock it in position. It prevents gradual loosening caused by vibrations or temperature variations in the system.
Its 6-sided profile allows precise tightening with a wrench. Widely used in plumbing to secure connections, it is also suitable for decorative purposes such as fixing elements on threaded rods (light fixtures, shelves).
Technical Specifications
| Material | Brass CW617N - 4MS |
| Colour | Golden brass |
| Nominal pressure | PN 16 bar |
| Thread standard | ISO 228-1 - BSPP Gas (parallel thread) |
| Sealing | Guaranteed flat gasket seal (minimum thickness 1 mm) |
| Gasket seats | Flat bearing faces on both sides |
| Shape | 6-sided (hexagonal) |
| Type | Female (internally threaded) |
| Compatible fluids | Drinking water, glycol water, compatible fluids |
| Temperature | Depends on the type of seal used |
| Application | Drinking water supply, general plumbing, HVAC |
Operating Conditions and Installation
- Operating pressure: PN 16 bar
- Temperature: Depends on the type of seal used
- Fluids: Drinking water, glycol water, compatible fluids
- Installation: Apply moderate tightening torque and use suitable materials (risk of galvanic corrosion). Wrench flats compatible with standard tools.
Certifications and Compliance
- Drinking water: Compliant with the French decree of 25 June 2020 on metallic materials and products intended for installations in contact with water for human consumption.
- 4MS: Compliant with 4MS requirements — Harmonisation of European certification rules for materials and products in contact with drinking water.
Applications and Installation Tips
Applications
- Domestic plumbing: hot and cold water installation connections
- Industrial plumbing: PN 16 bar compliant installations
- Interior decoration: creating light fixtures, shelves, towel rails in exposed brass
- DIY and creative projects: custom projects with screw-in fittings
Installation tips
- Use PTFE tape (Teflon) or hemp to ensure sealing on male threads
- For flat gasket seats, use a flat gasket with a minimum thickness of 1 mm
- Tighten with an open-end wrench or adjustable wrench — do not use slip-joint pliers to avoid damaging the fitting
- Apply moderate tightening torque — over-tightening may damage the thread
Technical Drawing
Dimensions (mm)
All dimensions are expressed in millimetres (mm) unless otherwise stated.
| G | G (mm) | S | L |
|---|---|---|---|
| 1/4" | 8x13 | 16 | 3 |
| 3/8" | 12x17 | 20 | 3.5 |
| 1/2" | 15x21 | 24 | 4 |
| 3/4" | 20x27 | 30 | 5 |
| 1" | 26x34 | 37 | 5 |
| 1"1/2 | 40x49 | 46 | 6 |
| 1"1/4 | 33x42 | 52 | 6 |
| 2" | 50x60 | 65 | 8 |
Size Equivalences
This lock nut is available in the following sizes. Use this table to find the equivalence between millimetres, inches and DN.
| Size (mm) | 8x13 | 12x17 | 15x21 | 20x27 | 26x34 | 33x42 | 40x49 | 50x60 |
|---|---|---|---|---|---|---|---|---|
| Inches | 1/4'' | 3/8'' | 1/2'' | 3/4'' | 1'' | 1''1/4 | 1''1/2 | 2'' |
| DN | DN8 | DN10 | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 |
| Ext. tube dia. | 13 mm | 17 mm | 21 mm | 27 mm | 34 mm | 42 mm | 49 mm | 60 mm |
The appearance of the part may vary depending on the batch in stock (see photos). Contact us for confirmation.
Payment & Security
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