Dongguan Situo Hardware Products Technology Co., Ltd
                                                                                                           
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7 Years
Since 2019
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Black zinc plated hexagonal nuts, draft beer mechanical parts, CNC machining service

Price Negotiable
Price: 5-10 USD per item
MOQ: 1PCS
Delivery Time: Communication
Brand: SITUO
Product Description

Black zinc plated hexagonal nuts, draft beer mechanical parts, CNC machining service

 

Application and Characteristics of Machined Hex Nuts in Beer Machine Components

 
Machined hex nuts are core connecting components in beer machines (brewing / dispensing equipment), mainly responsible for structural fastening, sealing assurance, and positioning installation, requiring a balance among strength, hygiene, and corrosion resistance.
 

Core Application Scenarios

 
  1. 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.
  2. 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.
  3. 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.
  4. 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

 
  1. 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.
  2. 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.
  3. 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.

Company Dongguan Situo Hardware Products Technology Co., Ltd
Location No. 9, Shi bi One Alley, Zhangmutou Town, Dongguan City, Guangdong Province
Contact Person chen

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