Black zinc plated hexagonal nuts, draft beer mechanical parts, CNC machining service
Black zinc plated hexagonal nuts, draft beer mechanical parts, CNC machining service
Application and Characteristics of Machined Hex Nuts in Beer Machine Components
Core Application Scenarios
- Tap / Dispense Tower Assembly
Used to fix the tap to the tower and adjust the outlet direction, with gaskets for sealing, serving as a key connection point at the dispensing terminal.
- Pipeline and Valve System
Fasten sanitary pipe flanges, valve bodies, and fittings, withstand beer pressure and vibration from frequent switching, ensuring a leak‑free conveying line.
- Tank and Frame
Secure nozzles, legs, and internal components of fermentation and bright beer tanks, supporting the overall equipment structure and resisting workshop environment and cleaning corrosion.
- Coupler and Gas Circuit
Lock core parts such as CO₂ inlet nozzles and beer check valves, preventing gas leakage and beer backflow, ensuring stable gas supply and dispensing.
Key Technical Characteristics
| Dimension | Core Requirements | Selection and Processing Points |
|---|---|---|
| Material & Corrosion Resistance | Food‑grade corrosion resistance | Priority: 316L stainless steel (molybdenum‑containing, chloride‑ion pitting resistance) for CIP cleaning and chlorinated disinfection; 304 for general applications; 904L for highly corrosive conditions. |
| Structure & Precision | Reliable sealing, easy assembly | Hexagonal shape (spanner‑friendly, uniform tightening torque); thread precision 6H/5H, anti‑gall; with flat washers / locking parts for stress distribution. |
| Hygiene & Compliance | No residue, easy to clean | Surface roughness Ra ≤ 0.8 μm, no dead ends; compliant with FDA / GB 4806 food contact standards, avoiding heavy metal precipitation. |
| Mechanical Properties | Vibration resistance, pressure resistance | Property class A2‑70 (tensile strength ≥ 700 MPa); thick or locking nuts (e.g., nylon‑insert) for high‑vibration / high‑pressure pipelines. |
| Standard & Compatibility | Interchangeability, compatibility | Commonly used standards: GB/T 6170 (Type 1), GB/T 6175 (Type 2, for high‑strength bolts); sizes M6–M24 cover most applications. |
Processing and Application Points
- Processing Control
Precision thread turning, control of pitch and width‑across‑flats tolerance; deburring to avoid scratching sealing surfaces; heat treatment for strength and toughness, preventing hydrogen embrittlement.
- Installation Specification
Clean threads and sealing surfaces, tighten step‑by‑step diagonally for uniform loading; fasten to specified torque to avoid thread damage from over‑tightening or leakage from under‑tightening.
- Maintenance & Corrosion Protection
Regularly check for looseness and corrosion, replace timely; avoid hard scratching during cleaning; passivation available for high‑humidity / corrosive environments to extend service life.
Selection Guide
- Small / Household Dispensing Equipment: 304 stainless steel A2‑70, GB/T 6170, M6–M12, with EPDM gaskets
- Commercial Brewing / High‑Pressure Pipeline: 316L stainless steel A2‑70 / A4‑80, GB/T 6175, M10–M20, locking design
- High Corrosion / Frequent Cleaning: 316L or 904L, Ra ≤ 0.8 μm, electropolished, compliant with EHEDG / 3A standards
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. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, which can effectively provide customers with the best technical solutions.
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.
Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.
Our customers include , bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.
| OUR CAPACITY | ||||
| Main product names: | Stainless steel screws, carbon steel screws, pins, rivets, nuts, | |||
| eccentric nails, embedded parts, and other fasteners. | ||||
| Business Type | Factory / Maufacture | |||
| Service | CNC Machining | |||
| Turning and Milling | ||||
| CNC Turning | ||||
| Cold heading | ||||
| stamping | ||||
| Assembly Service | ||||
| Material | 1). Aluminum: AL 6061-T6, 6063, 7075-T etc | |||
| 2). Stainless steel:303,304,304L,316L,316F,630,410,420,430, etc | ||||
| 3). Steel: 4140, Q235, Q345B,20#,45# 1215,12L14 ,1144,1006,1008,1010,1015,1018 ,10B21,1035,1065 etc. | ||||
| 4)Alloy steel:5140,4135,4140,3435,5120,415 ,435,440 etc | ||||
| 5). Titanium: TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc | ||||
| 6). Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90),C27000,C51900,C11000,C3604,H62,H65 etc | ||||
| 7). Copper, bronze, Magnesium alloy, Delrin, POM,Acrylic, PC, etc. | ||||
| Finish | Sandblasting, Anodize color, Blackenning, Zinc/Nickl Plating, Polish, | |||
| Power coating, Passivation PVD, Titanium Plating, Electrogalvanizing, | ||||
| electroplating chromium, electrophoresis, QPQ(Quench-Polish-Quench), | ||||
| Electro Polishing,Chrome Plating, Knurl, Laser etch Logo, etc. | ||||
| Drawing format | STEP,STP,GIS,CAD,PDF,DWG,DXF etc or samples. | |||
| Tolerance | +/-0.01mm ~ +/-0.05mm | |||
| Surface roughness | Ra 0.1~3.2 | |||
| Inspection | Complete inspection lab with Micrometer, Optical Comparator, Caliper Vernier,CMM | |||
| Depth Caliper Vernier, Universal Protractor, Clock Gauge, Internal Centigrade Gauge | ||||
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.











