Reliable Components for Hydraulic Tube Connections

Metric tube nuts are important fastening components used in hydraulic piping systems. They connect tube ends with threaded fittings and help maintain stable sealing performance under pressure. These components are widely used in hydraulic equipment, industrial machinery, automotive systems, and fluid control applications.

Our manufacturing capability covers thread sizes from M2×0.25 to M60×2. Outer diameters range from Φ4mm to Φ110mm, with overall lengths from 4mm to 180mm. These customized connection parts provide reliable installation and long-term sealing performance for different hydraulic systems.

Accurate Threads and Stable Sealing Performance

Thread accuracy and sealing surface quality directly affect connection reliability. We control internal thread accuracy according to Grade 6H requirements and maintain sealing surface flatness within 0.005mm.

For larger specifications, we maintain dimensional tolerance within ±0.02mm while keeping consistent thread quality. Accurate threads ensure proper engagement between components. A flat sealing surface creates reliable contact with tube ends, helping reduce leakage risks and improving hydraulic system stability.

Professional Thread Machining and Quality Control

Thread machining requires precise equipment and stable process control. We use high-precision thread turning and thread milling equipment to achieve consistent thread dimensions.

Our production team regularly checks cutting tools and fixtures to prevent dimensional changes caused by wear. During inspection, we use thread gauges and precision measuring instruments to verify critical parameters.

Every batch follows strict quality procedures, including incoming material inspection, process inspection, and final inspection. We also implement VDA6.3 process control standards to maintain stable manufacturing quality from raw material to finished products.

Flexible Customization and Technical Support

We support customized production according to customer drawings, samples, and application requirements. After receiving technical information, our engineering team reviews machining feasibility and provides suitable production solutions.

Sample development usually takes 15 to 30 days. After sample approval, mass production can be arranged within 30 to 60 days depending on order quantity and complexity.

We provide flexible payment and inspection options for international customers. Third-party inspections are also accepted to help customers verify product quality before shipment.

Technical Specifications

Parameter	Minimum Specification	Maximum Specification
Thread Specification	M2×0.25	M60×2
Outer Diameter (Φ)	4 mm	110 mm
Overall Length	4 mm	180 mm
Thread Accuracy	6H	6H
Sealing Surface Flatness	≤0.005 mm	-
Dimensional Tolerance	-	±0.02 mm