304 SS Male Hex Nipple BSP Pipe Fitting DN8–DN40 Water Oil Air
304 SS Male Hex Nipple BSP Pipe Fitting DN8–DN40 Water Oil Air
Details
304 Stainless Steel Male Thread Hex Nipple Union – BSP Pipe Fitting Connector
Keep your plumbing, hydraulic, or pneumatic systems running leak-free with this precision-cast 304 stainless steel hex nipple union. Featuring a hexagonal body for easy wrench-tightening, these male-threaded BSP couplers deliver a secure, durable connection for water, oil, and air lines alike. Sold individually (1 piece per order), they are available in a wide range of DN sizes to suit virtually any application.
Key Features
- Premium 304 Stainless Steel – Corrosion-resistant and built to last in demanding environments
- BSP Male Thread – Available in 1/8", 1/4", 3/8", 1/2", 3/4", 1", and 1-1/4" thread sizes
- Hexagonal Head – Standard hex profile for secure tightening with a wrench or spanner
- High-Pressure Rated – Operating pressure up to 1 MPa (143 PSI / ≥850 kPa)
- Equal/Straight Coupling – Maintains consistent bore for unrestricted flow
- Multi-Media Compatible – Suitable for water, oil, and air systems
- Casting Manufacture – Tight tolerances for reliable thread engagement and a leak-resistant seal
Size Reference Chart
| BSP (Inch) | DN Size | OD (Inch) | OD (mm) |
|---|---|---|---|
| 1/8" | DN6 | 0.38" | 9.7 mm |
| 1/4" | DN8 | 0.51" | 13.2 mm |
| 3/8" | DN10 | 0.65" | 16.7 mm |
| 1/2" | DN15 | 0.82" | 21.0 mm |
| 3/4" | DN20 | 1.04" | 26.5 mm |
| 1" | DN25 | 1.31" | 33.2 mm |
| 1-1/4" | DN32 | 1.65" | 41.9 mm |
| 1-1/2" | DN40 | 1.88" | 47.8 mm |
Specifications
- Material: 304 Stainless Steel
- Thread Type: BSP Male
- Head Style: Hexagon
- Shape: Equal (straight coupling)
- Manufacturing Method: Casting
- Operating Pressure: Up to 1 MPa (143 PSI)
- Compatible Media: Water, Oil, Air
- Quantity: 1 piece per order
- Country of Origin: Made in China
Common Applications
- Plumbing and water supply systems
- Hydraulic and pneumatic lines
- Industrial fluid transfer equipment
- Oil and fuel lines
- Compressed air systems and fittings
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Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What thread standard do these stainless steel hex nipple unions use?
A: These hex nipple unions feature BSP (British Standard Pipe) male threads, available in sizes from 1/8" (DN6) up to 1-1/2" (DN40). BSP threads are widely used in plumbing, hydraulic, and pneumatic applications worldwide.
Q: Are these pipe fittings suitable for both water and air systems?
A: Yes. The 304 stainless steel construction and cast precision threading make these hex nipple unions compatible with water, oil, and compressed air lines, rated to an operating pressure of up to 1 MPa (143 PSI).
Q: How many pieces are included per order?
A: Each order includes 1 (one) hex nipple union. Please select your required DN size from the available options and add the quantity you need to your cart.
Q: Will a standard wrench fit the hexagonal head?
A: Yes. The hexagonal (hex) head profile is designed to fit standard wrenches and spanners, making installation and removal straightforward in tight spaces.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.