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Double Thread Hexagon Sealing Nut is a high-pressure pipe plug fitting specially designed for pneumatic, hydraulic and fluid pipeline systems. Adopting premium carbon steel or stainless steel material, manufactured by cold heading strengthening and integrated CNC precision machining, this inner hex pipe plug features dual internal and external thread structure. It integrates blocking, sealing and locking functions in one unit, with precise tolerance, standard thread and flat sealing surface.
Core Product Advantages
Dual Internal & External Thread Design
Different from ordinary single-thread plugs, this double-thread structure supports external locking and internal thread connection, realizing pipeline blocking, switching and fixing functions simultaneously. The built-in inner hexagon hole allows convenient tool installation, ensuring uniform locking force, anti-slip and anti-loosening performance.
Cold Heading + CNC Machining
Cold heading technology densifies the metal structure, improving overall rigidity, pressure resistance and impact resistance. Multi-process CNC turning ensures accurate thread pitch, flat sealing surface and precise concentricity. Burr-free and dimensionally stable, the plug maintains no deformation or leakage under long-term high-pressure working conditions.
Excellent Sealing Performance
The precisely processed flat sealing surface fits closely with pipeline ports. Matched with sealing gaskets, it achieves perfect sealing effect against compressed air, hydraulic oil and conventional fluid media. It effectively avoids pressure loss, liquid leakage, dust and water ingress.
Multiple Materials & Anti-Corrosion Treatment
Optional carbon steel, 304 and 316 stainless steel meet different working environment requirements. Carbon steel can be zinc-plated, nickel-plated or black-oxidized for rust prevention; stainless steel features natural acid, alkali and moisture corrosion resistance.
Full Non-Standard Customization
We support custom thread pitch, thread specification, length, hex size, sealing grooves and step structures according to drawings and samples. Prototype trial production and large-scale mass production are acceptable, fully meeting personalized demands.
Application Scenarios
High-pressure sealing plug nuts for hydraulic pipeline systems
Double thread blocking fittings for pneumatic valve bodies and air pipes
Anti-leakage fasteners for industrial oil circuits and fluid equipment
Pressure-proof pipe plugs for automated equipment pipeline protection
Custom hex sealing parts for non-standard fluid control systems
Quality Assurance & Service
Every double thread hexagon sealing nut undergoes strict thread testing, high-pressure air tightness & hydraulic sealing testing, dimensional calibration and full appearance inspection before delivery. Standard sizes are well-stocked for fast shipment, and one-stop custom CNC machining services are provided.
Manufacturing Capabilities
We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs. Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001.
Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment and implement 8S management with ISO9001 and TS16949 automotive certifications.
Technical Specifications
Business Type
Factory / Manufacturer
Services
CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service
