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China factory - Dongguan Situo Hardware Products Technology Co., Ltd

Dongguan Situo Hardware Products Technology Co., Ltd

  • China,Dongguan ,Guangdong
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China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts
China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts

  1. China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts
  2. China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts
  3. China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts
  4. China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts
  5. China Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts

Stainless steel precision hardware M4 semi-threaded Draft Beer mechanical parts

  1. MOQ： 1PCS
  2. Price： 5-10 USD per item
  3. Get Latest Price
Category connector
packing carton
Compatibility Universal with standard draft beer systems
origin china
head shape Customized
Components Included Coupler, Faucet, Keg Connector, Tubing
Material grade Food-grade
Corrosion Resistance High
Material stainless steel
Sample period 10 to 15 days
Precision Min0.001
Connector Type Sanke Coupler
Usage Commercial and Home Draft Beer Systems
Payment Terms T/T
Supply Ability 10000PCS per day
Delivery Time Communication
Packaging Details Communication
Surface treatment passivation
Length 26.0mm
Brand Name SITUO
Model Number ST-140002
Certification ISO9001 & TS16949
Place of Origin GuangDong Dongguan

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  1. Product Details
  2. Company Details

Product Specification

Category connector packing carton
Compatibility Universal with standard draft beer systems origin china
head shape Customized Components Included Coupler, Faucet, Keg Connector, Tubing
Material grade Food-grade Corrosion Resistance High
Material stainless steel Sample period 10 to 15 days
Precision Min0.001 Connector Type Sanke Coupler
Usage Commercial and Home Draft Beer Systems Payment Terms T/T
Supply Ability 10000PCS per day Delivery Time Communication
Packaging Details Communication Surface treatment passivation
Length 26.0mm Brand Name SITUO
Model Number ST-140002 Certification ISO9001 & TS16949
Place of Origin GuangDong Dongguan
High Light precision beer machine accessory ，precision draft beer system parts ，stainless steel beer machine accessory
Stainless Steel Precision Hardware M4 Semi-Threaded Draft Beer Mechanical Parts
Stainless steel precision hardware M4 semi-threaded draft beer mechanical parts
Application and Characteristics of Food-Grade Stainless Steel Pins in Beer Machine Components
Food-grade stainless steel pins are core components for articulated connection and motion actuation in beer machines. They must simultaneously meet three key requirements: mechanical strength, hygiene safety, and corrosion resistance to beer media. 304 (06Cr19Ni10) or 316 (06Cr17Ni12Mo2) are the mainstream grades suitable for different brewing conditions.
Core Application Scenarios
Pins mainly provide movable connections in beer machines and are essential for flexible operation.
Application Part Core Function Typical Beer Machine Type
Tap / Dispensing Valve Hinge Controls beer flow, enables tap swing/flip for different dispensing angles Household / Commercial Draft Beer Machines, Beer Towers
Keg Handling Mechanism Supports keg lifting, flipping and locking for fast keg changes Automatic Beer Dispensers, Kegging Equipment
Stirring / Filling Assemblies Connects agitators or filling nozzles for mixing and dosing Home Brewing Systems, Fermenter Accessories
Frame Folding / Adjustment Joints Enables folding, height/angle adjustment for space efficiency Portable Beer Machines, Modular Beer Stations
Cleaning Device Hinge Connects cleaning spray heads or rotating arms for CIP cleaning Automatic Beer Equipment Cleaning Systems
Key Materials and Performance Characteristics
Main Material Selection
  • 304 Stainless Steel (SUS304) - Contains 18-20% Cr and 8-10.5% Ni. Cost-effective and resistant to weak acids, alkalis and standard beer media. Suitable for general brewing conditions (alcohol ≤5%, no high-chlorine cleaning). Compliance: Must meet GB 4806.9-2023 National Food Safety Standard - Metal Materials and Articles in Contact with Foodstuffs. Heavy metal migration limits: Pb ≤0.01 mg/dm², Cd ≤0.005 mg/dm².
  • 316 Stainless Steel (SUS316) - Adds 2-3% molybdenum for significantly improved chloride ion corrosion resistance. Ideal for harsh conditions (high-salt/high-acid beer, fruit beers, frequent CIP with chlorine-based cleaners). Application: Industrial breweries, heavy-use commercial machines, corrosive brewing environments.
Key Performance Features
Hygiene and Safety (Critical Requirement)
  • Smooth, easy-to-clean surface: Non-porous, no dead zones, prevents yeast, residue and bacterial growth
  • No harmful substance migration: Alloy element migration meets food standards, no impact on beer flavor
  • Compatible with food-grade lubricants (e.g., H1) to avoid contamination
Media and Environmental Corrosion Resistance
  • Resistant to beer ingredients: weak organic acids, CO₂, alcohols
  • Withstands cleaning chemicals: caustic soda, nitric/phosphoric acid, chlorine sanitizers, and thermal cycling (0°C-90°C)
  • Stable in high-humidity cleaning environments, no rust or contamination
Mechanical and Processing Properties
  • Strength and toughness: Tensile strength ≥520 MPa, yield strength ≥205 MPa, withstands radial load, impact and fatigue
  • Good machinability: Easily turned, cold-headed, polished; made into grooved, drilled or cylindrical pins
  • Excellent weldability: 304L/316L reduce intergranular corrosion risk after welding
Surface Treatment and Processing Requirements
For optimal hygiene and corrosion resistance, food-grade surface finishes are required:
  1. Electropolishing (Preferred) - Surface roughness Ra ≤0.4 μm (even Ra ≤0.05 μm), mirror-like finish reduces adhesion. Strengthens passive film for better pitting resistance.
  2. Chemical Passivation - Uses citric/nitric acid to remove free iron and form a protective chromium oxide layer, with thorough post-passivation rinsing.
  3. No Hazardous Coatings - No toxic coatings (Cr⁶⁺, lead, etc.). Use natural finish or food-grade transparent film only.
Selection and Application Guidelines
  1. Condition-Based Selection
    • Household / light commercial: 304 for balanced cost and performance
    • Industrial / frequent CIP / high-chlorine: 316 for superior corrosion resistance
  2. Structure and Precision
    • Preferred: Type B pins with split pin holes (GB/T 882) for anti-loosening under vibration
    • Controlled fit and clearance for smooth motion without excessive wear
  3. Maintenance and Compliance
    • Regular inspection for scratches, pits or wear; replace worn pins
    • Require GB 4806.9-2023 test reports and certifications (FDA, NSF)
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 / Manufacture
Service: CNC Machining, Turning and Milling, CNC Turning, Cold heading, stamping, Assembly Service
Material: Aluminum: AL 6061-T6, 6063, 7075-T etc; Stainless steel: 303,304,304L,316L,316F,630,410,420,430, etc; Steel: 4140, Q235, Q345B,20#,45# 1215,12L14 ,1144,1006,1008,1010,1015,1018 ,10B21,1035,1065 etc; Alloy steel: 5140,4135,4140,3435,5120,415 ,435,440 etc; Titanium: TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc; Brass: C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90),C27000,C51900,C11000,C3604,H62,H65 etc; 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
Precision stainless steel hardware components for beer machines M4 semi-threaded mechanical parts manufacturing process CNC machining of draft beer equipment components Stainless steel pin production and quality control Food-grade stainless steel fastener manufacturing Precision hardware components for beverage industry Industrial manufacturing equipment and capabilities Quality inspection of mechanical parts Advanced CNC machining technology Manufacturing facility and production line Precision engineering and assembly processes Final product inspection and packaging

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Seller

  • Year Established:

    2019

  • Total Annual:

    2800000-3500000

  • Employee Number:

    50~100

  • Ecer Certification：

    Verified Supplier

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Get in touch with us

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  • Dongguan Situo Hardware Products Technology Co., Ltd
  • No. 9, Shi bi One Alley, Zhangmutou Town, Dongguan City, Guangdong Province
  • https://www.cnc-hardwareparts.com/

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