Our comprehensive product portfolio includes a wide range of brass rods (including low-lead and lead-free grades), brass fittings, and pipe components, engineered for exceptional mechanical strength, corrosion resistance, and machinability across plumbing, HVAC, automotive, and industrial applications.
Brass Hexagonal Double Male Thread Extension Adapter is designed to solve common pipeline installation problems such as insufficient connection length, limited installation space, and mismatched equipment interfaces.
The adapter features male threads on both ends, allowing it to connect two female threaded components securely. The middle hexagonal section provides a convenient wrench gripping surface, making installation easier and preventing damage caused by improper force during tightening.
Compared with ordinary zinc alloy or thin-wall brass fittings, this product uses thickened brass construction, providing higher pressure resistance and better durability under continuous working conditions. It is widely used in water supply systems, heating pipelines, refrigeration equipment, pneumatic systems, gas applications, and industrial fluid connections.
Made from high-grade CW617N, H59, or H62 brass, our adapters offer excellent machinability, corrosion resistance, and mechanical strength—outperforming recycled alternatives in durability. Lead-free, RoHS-compliant options are also available.
Using forging and CNC technology, each adapter is precision-turned, cut, polished, and inspected to ensure stable dimensions and smooth engagement. Threads can be customized to ISO7-1, ASME B1.20.1, BSP, BSPT, NPT, or metric standards, reducing installation resistance and leakage risks.
Our ISO9001-certified system covers every stage—from material inspection to pressure testing and final checks. All shipments undergo dimensional, surface, thread, and seal performance testing. RoHS-compliant materials and supporting documentation are available for regulated markets, along with ISO certificates and inspection reports upon request.
Many pipeline failures are caused by thin-wall fittings that deform under pressure or repeated installation. NINGXING Brass Hexagonal Double Male Thread Extension Adapter adopts a reinforced wall structure, improving mechanical strength and resistance to pressure impact.
The thickened design allows the adapter to maintain structural stability in applications involving temperature fluctuations, vibration, and continuous operation.
The integrated hexagonal center design provides a larger wrench contact area compared with round-body fittings.
During installation, workers can easily apply torque without slipping, significantly improving efficiency in narrow spaces or complex pipeline layouts.
For maintenance projects, the hexagonal structure also allows quick removal and replacement without damaging connected components.
As a professional brass fitting manufacturer, NINGXING provides direct factory supply without unnecessary middle costs.
With stable production capacity and mature supply chain management, we support:
1. Bulk wholesale orders
2. OEM/ODM customization
3. Customized thread standards
4. Customized length and diameter
5. Surface treatment options including nickel plating and chrome plating
Standard products are available from stock, helping customers shorten purchasing cycles and maintain project schedules.
To ensure stable performance and reliable sealing, consider these key factors when selecting a brass hexagonal double male thread adapter:
1. Thread standard: Choose ISO7-1/BSP for European and Asian markets, or ASME B1.20.1 NPT for North American projects to ensure proper compatibility.
2. Material grade: H59/H62 brass offers good value for general water supply; CW617N is preferred for higher-end systems and European exports due to better corrosion resistance and machinability.
3. Length, pressure, and environment: Match specifications to your operating conditions. For applications with temperature fluctuations, vibration, or sustained high pressure, opt for thick-wall, reinforced designs to extend service life and reduce maintenance.
Compared with ordinary steel connectors, zinc alloy fittings, or thin-wall brass adapters, NINGXING Brass Hexagonal Double Male Thread Extension Adapter provides significant advantages in durability, installation efficiency, and long-term operating reliability.
| Comparison Item | NINGXING Brass Hexagonal Extension Adapter | Ordinary Connector |
|---|---|---|
| Material | CW617N / H59 / H62 Premium Brass | Low-grade brass or zinc alloy |
| Manufacturing Process | Forging + CNC Precision Machining | Simple casting or machining |
| Thread Accuracy | ISO7-1 / ASME B1.20.1 compatible | Lower accuracy |
| Corrosion Resistance | Excellent, suitable for long-term water contact | Higher risk of oxidation |
| Installation | Hexagonal body for easy wrench operation | Difficult tightening |
| Service Life | Long-term stable performance | Shorter replacement cycle |
The combination of premium brass material, precision machining, and reinforced hexagonal structure makes NINGXING products especially suitable for engineering projects where reliability and maintenance cost control are important.
A residential development project in Singapore required reliable brass fittings for bathroom and kitchen water supply connections.
The contractor selected NINGXING Brass Hexagonal Double Male Thread Extension Adapter with ISO7-1 compatible threads. After installation, the pipeline system passed pressure testing successfully.
After more than 18 months of operation, no leakage or corrosion was reported at the connection points, demonstrating stable sealing performance in daily hot and cold water applications.
A manufacturing factory in Vietnam needed extension adapters for its equipment cooling water system. The project required fittings capable of handling frequent temperature changes and continuous operation.
NINGXING supplied CW617N brass adapters with reinforced wall thickness and precision-machined threads.
After 24 months of operation, the cooling system remained stable without thread damage or connection leakage, helping the customer reduce maintenance frequency and production downtime.
| Size Range | Thread Standard | Material | Working Pressure | Working Temperature | Customization Options |
|---|---|---|---|---|---|
| 1/8" (DN6) | BSP / NPT | CW617N / H59 / H62 Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 1/4" (DN8) | BSP / NPT | CW617N / H59 / H62 Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 3/8" (DN10) | BSP / BSPT | Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 1/2" (DN15) | ISO7-1 / NPT | Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 3/4" (DN20) | ISO7-1 / NPT | Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 1" (DN25) | BSP / NPT | Brass | ≤1.6 MPa | -20℃ to 120℃ | Available |
| 1-1/4" to 4" (DN32-DN100) | Customized Thread Standards | Brass | Customized | Customized | Length, diameter, thread type & surface treatment available |
Note: Custom brass adapters can be manufactured according to customer requirements, including customized lengths, diameters, thread standards (BSP, BSPT, NPT, ISO7-1), and surface finishes to meet different industrial piping applications.
| Nominal Size | DN Size | Thread Specification | Outer Diameter (mm) | Inner Diameter (mm) | Thread Pitch (mm) |
|---|---|---|---|---|---|
| 1/8" | DN6 | G1/8 | 9.728 | 8.566 | 0.907 |
| 1/4" | DN8 | G1/4 | 13.157 | 11.455 | 0.907 |
| 3/8" | DN10 | G3/8 | 16.662 | 14.950 | 1.337 |
| 1/2" | DN15 | G1/2 | 20.955 | 18.631 | 1.814 |
| 3/4" | DN20 | G3/4 | 26.441 | 24.117 | 1.814 |
| 1" | DN25 | G1" | 33.249 | 30.291 | 2.309 |
| 1-1/4" | DN32 | G1-1/4" | 41.910 | 38.952 | 2.309 |
| 1-1/2" | DN40 | G1-1/2" | 47.803 | 44.845 | 2.309 |
| 2" | DN50 | G2" | 59.614 | 56.656 | 2.309 |
| 2-1/2" | DN65 | G2-1/2" | 75.184 | 72.226 | 2.309 |
| 3" | DN80 | G3" | 87.884 | 84.926 | 2.309 |
| 4" | DN100 | G4" | 113.030 | 110.070 | 2.309 |
NINGXING maintains a full inspection system covering raw material verification, in-process machining checks, thread testing, pressure testing, and final visual inspection. Incoming brass materials are tested for alloy composition and mechanical properties before production. During machining, critical dimensions—including thread pitch, outer diameter, length, and hex size—are measured with precision instruments. Each batch of brass hexagonal double male thread adapters undergoes sealing performance tests to eliminate leakage risks caused by machining defects or dimensional deviations.
With professional equipment, skilled workers, and optimized processes, our factory maintains a steady monthly output to handle bulk orders.
Standard specifications are available from stock. For custom requirements—such as special thread standards, extended lengths, or surface treatments—sample lead time is typically 2-7 days.
This flexible production capability enables us to support customers ranging from small trial orders to large-scale construction and industrial projects.
NINGXING Brass Hexagonal Double Male Thread Extension Adapter can be manufactured using CW617N, H59, and H62 brass materials. CW617N is commonly used for European plumbing applications, while H59 and H62 provide excellent strength and machining performance.
The product supports ISO7-1, ASME B1.20.1, BSP, BSPT, NPT, and metric thread standards to meet different installation requirements worldwide.
Leakage prevention depends on accurate thread machining, proper sealing materials, and correct installation torque. NINGXING products feature precise thread dimensions and strict inspection procedures to ensure reliable sealing performance.
Yes. NINGXING supports OEM/ODM services, including customized size, length, thread type, surface treatment, packaging, and logo marking.
Yes. Customers can request ISO9001 quality management certification documents, RoHS compliance information, and related inspection reports for international projects.
NINGXING operates professional brass fitting production lines with stable monthly production capacity, supporting large-volume wholesale orders and international project supply.
NINGXING combines advanced manufacturing technology, premium brass materials, strict quality management, and flexible customization capability to provide reliable threaded connection solutions worldwide.
With ISO9001-certified production, RoHS-compliant material options, international thread compatibility, and proven application experience in markets such as Singapore and Vietnam, NINGXING is committed to delivering high-quality brass fittings that help customers reduce installation risks and improve project reliability.
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No. 478, Daijia North Road, Industrial Zone, Changhe Town, Cixi City, Zhejiang Province, China
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