CNC Fluid Connectors & Tube Fittings Technical Specifications
| Bolt Types | Adjusting Screws, Set Bolts, Tensioning Bolts, Hollow Jack Screws, Cam Adjusting Bolts |
|---|---|
| Primary Equipment | Star CNC Swiss-type Lathes, 4-axis CNC Machining Centers, Thread Rolling Machines |
| Thread Standards | Metric (M), Unified (UNF/UNC), BSPP, Acme, Trapezoidal, Custom Micro-Threads |
| Dimensional Tolerance | Thread Pitch Diameter: 4H/6g; Shank Diameters: ±0.005mm |
| Geometric Tolerances | Concentricity (Thread to Shank): 0.01mm; Runout (Head to Body): 0.02mm |
| Common Materials | 12L14, 1045 Carbon Steel, 42CrMo, SUS303, SUS304, SUS316 |
| Heat Treatment | Quenching & Tempering, Case Hardening, Induction Hardening (Up to HRC 45-55) |
| Surface Roughness (Ra) | Ground Thread & Shank: Ra 0.4; Turned Surfaces: Ra 0.8 |
| Machining Features | Hex Sockets, Cross-Drilled Wire Holes, Relief Grooves, Custom Tapers, Internal Hex |
| Inspection Equipment | German/Japanese Thread Gauges, CMM, Optical Comparators, Hardness Testers |
High-Precision CNC Fluid Connectors & Tube Fittings for Critical Calibration
At Xierge Precision Machinery Co., Ltd., we leverage over 30 years of operational experience since 1990 to manufacture premium CNC Fluid Connectors & Tube Fittings for the automotive, industrial machinery, and precision equipment sectors. Adjusting bolts are critical calibration components used for exact positioning, tensioning, and clearance adjustments. They demand extreme thread accuracy, superior surface finishes, and precise geometric tolerances to ensure smooth, repeatable adjustments without galling or loosening under dynamic loads. Even a microscopic deviation in thread pitch or concentricity can lead to inaccurate calibrations or assembly failures.
To achieve flawless results, our production facility is equipped with Japanese imported Star CNC Swiss-type lathes and advanced 4-axis CNC machining centers. This specialized equipment allows us to machine complex bolt geometries—including precision threads, hex sockets, cross-drilled wire holes, and micro-relief grooves—in a single continuous setup. The guide bushing technology on our Swiss lathes provides unparalleled support, completely eliminating deflection when machining long, slender adjusting bolts and ensuring absolute coaxiality between the thread and the shank.
Following our core principle of "Integrity Oriented, Quality Foremost," we strictly adopt premium raw materials, such as 12L14 free-machining steel, 42CrMo, and SUS303 stainless steel, tailored to your specific load and environmental requirements. We apply strict quality inspection protocols utilizing a complete set of testing instruments imported directly from Japan and Germany. We keep innovating to maintain sound business development and warmly welcome domestic and overseas clients to visit our factory and explore custom OEM/ODM cooperation opportunities.
Core Advantages of Xierge CNC Fluid Connectors & Tube Fittings
- Single-Setup Swiss Turning: Our Japanese Star CNC Swiss-type lathes allow us to turn, thread, and mill cross-holes in one operation, maintaining extreme concentricity and eliminating secondary clamping errors.
- Ultra-Precision Thread Machining: We achieve high-precision threads through single-point turning or thread rolling, ensuring flawless pitch diameter and smooth engagement for precise, repeatable calibrations without backlash.
- Free-Machining Material Expertise: We have mature processing parameters for 12L14 and SUS303, significantly extending tool life and allowing us to offer highly competitive pricing for high-volume adjusting bolt mass production.
- Complex Geometry Milling: Our 4-axis CNC machining centers enable the precise milling of cam profiles, flat faces, and asymmetrical relief grooves directly on the bolt body for specialized adjustment mechanisms.
- Advanced Heat Treatment Control: For high-wear applications, we coordinate controlled induction hardening on the thread tips and bearing surfaces, preventing brittleness while providing superior wear resistance.
- Zero-Burr Hole Machining: To prevent jamming in precision assemblies, we utilize specialized back-chamfering tools to remove all burrs from cross-drilled wire holes and internal hex sockets.
- 3-Decade OEM/ODM Innovation: Since 1990, we have continuously innovated, collaborating closely with clients to optimize DFM (Design for Manufacturing) for custom bolt designs, seamlessly scaling from prototyping to mass production.
Payment Methods & Global Logistics Solutions
Secure International Payment Terms:
To facilitate smooth B2B international trade, we offer flexible and secure payment options. For mass production orders of CNC Fluid Connectors & Tube Fittings, we accept standard T/T (Telegraphic Transfer) with a 30% advance deposit and 70% balance before shipment. For large-scale automotive or industrial supply contracts, we are fully capable of processing Irrevocable Letters of Credit (L/C) at sight. For initial prototyping, sample orders, or custom tooling fees, PayPal and Western Union are also available to expedite the process.
Global Logistics & Protective Packaging:
We provide comprehensive end-to-end shipping solutions under FOB, CIF, and DAP Incoterms. For urgent prototypes or small batches, we utilize expedited international couriers such as DHL, FedEx, and UPS. For bulk mass production, we offer highly competitive sea freight (LCL/FCL) and air cargo rates through our trusted global forwarder network. Recognizing that adjusting bolts have delicate threads and precise hex sockets highly susceptible to impact and oxidation, we utilize specialized packaging: each bolt is individually wrapped in VCI (Volatile Corrosion Inhibitor) anti-rust paper, secured in custom EPE foam slots or blister trays to prevent thread-to-thread contact, and packed in sturdy export-grade cartons or wooden cases to ensure zero deformation during international transit.
FAQ
Concentricity is critical for smooth adjustment. By utilizing our Japanese Star CNC Swiss-type lathes, we can machine the precision shank, the relief groove, and single-point thread the component in a single continuous setup. This eliminates the positioning errors of secondary clamping, guaranteeing concentricity tolerances within 0.01mm.
Yes. Trapped burrs can damage mating threads during assembly. We utilize specialized carbide drills with optimized pecking cycles, followed by precision back-chamfering tools directly on the CNC machine. For absolute burr-free requirements, we employ thermal deburring, followed by rigorous ultrasonic cleaning to ensure a 100% clear internal path.
For applications requiring frequent adjustments and high wear resistance, we recommend 42CrMo or 1045 carbon steel, followed by induction hardening on the bearing surface and thread tips to achieve HRC 45-55. For environments requiring corrosion resistance, SUS303 or SUS304 with passivation is highly recommended.
Absolutely. Our Swiss-type lathes and machining centers are equipped with synchronized live tooling. We can single-point machine Acme, trapezoidal, or entirely custom thread profiles according to your drawings. We utilize imported Japanese and German thread gauges to ensure the pitch diameter meets strict specifications.
Standard calipers cannot accurately measure thread geometry. We utilize imported Japanese and German precision Go/No-Go thread plug and ring gauges for functional inspection. For detailed geometric analysis, we use optical comparators and Coordinate Measuring Machines (CMM) with micro-probes to map the exact pitch diameter, helix, and tooth angle.
Yes. With over 30 years of experience supplying the automotive industry, we are fully compliant with PPAP (Production Part Approval Process) requirements. We provide complete documentation, including dimensional layouts, material certificates, capability studies (Cpk/Ppk), and measurement system analysis (MSA) to ensure seamless integration into your automotive supply chain.
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