Dongguan Situo Hardware Products Technology Co., Ltd
Email: dzmjm168@163.com TEL: 86--13925509630
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Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems
  • Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems
  • Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems
  • Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems
  • Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems
  • Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems

Custom Carbon Steel 1/2 Inch Threaded Plug CNC Machined Pipe Plug for Hydraulic Systems

Place of Origin GuangDong Dongguan
Brand Name SITUO
Certification ISO9001 & TS16949
Model Number ST-300040
Product Details
Size:
8.0MM
Processing Technology:
CNC
Length:
32MM
Precision:
Min0.01
Color:
Customized
Sample Period:
10 To 15 Days
Specification:
Customized
Category:
Bushing
Head Shape:
Circle Head
Material:
Carbon Steel
Corrosion Resistance:
High
Surface Treatment:
Passivation
Product Name:
Screw
Highlight: 

Carbon Steel Threaded Plug

,

CNC Machined Pipe Plug

,

1/2 Inch Thread Screw Plug

Payment & Shipping Terms
Minimum Order Quantity
1PCS
Price
5-10 USD per item
Packaging Details
Communication
Delivery Time
Communication
Payment Terms
T/T
Supply Ability
10000PCS per day
Product Description
Custom Carbon Steel 1/2 Threaded Plug
Situo Hardware specializes in custom carbon steel 1/2 threaded plugs, imperial thread pipe plugs, and CNC precision fluid pipeline fittings. Our products serve hydraulic valve block systems, pneumatic pipeline equipment, construction machinery, automation equipment, and various industrial applications.
Product Overview
Manufactured from high-quality carbon steel raw materials and precision CNC turned, these threaded plugs feature standard imperial pipe threads including NPT, BSPT, and BSPP. The precision-machined threads ensure reliable sealing and high mechanical strength for blocking reserved holes and process holes in oil and air circuits, preventing medium leakage and contamination.
Core Advantages
Premium Materials
20#/45# carbon steel with dense texture, free from pores or sand holes, ensuring high compression and impact resistance for hydraulic systems.
Precision Threading
CNC single-point threading with one-time clamping, 100% inspected by thread gauges for reliable sealing and excellent interchangeability.
Multiple Head Styles
Customizable inner hexagon, outer hexagon, and square head designs to accommodate various installation spaces and requirements.
Surface Treatments
Available options include black oxide, electro-galvanizing, hot-dip galvanizing, and phosphating for enhanced wear and rust resistance.
Custom Solutions
Flexible non-standard customization for overall length, thread length, head thickness, and specialized chamfer structures.
Quality Assurance
Comprehensive inspections including thread gauge testing, dimensional measurement, and simulated sealing tests for consistent performance.
Application Scenarios
  • Sealing of process holes and pressure measuring holes for hydraulic valve blocks, oil cylinders, and hydraulic power units
  • Blocking fittings for reserved ports of pneumatic equipment pipelines and air valves
  • Oil hole screw plugs for construction machinery, reducers, and gearboxes
  • Sealing hardware for automation modules, mold oil circuits, and fluid control systems
  • Thread plugs for temporary blocking and pressure testing of industrial pipelines
  • Carbon steel pipe plugs for leakage prevention and dust sealing on heavy machinery fluid pipelines
Manufacturing Capabilities
We utilize advanced Japanese and German CNC equipment (5-axis and 6-axis machines) with maximum processing outer diameter of 60mm and minimum control tolerance of 0.001mm.
Company Scale: 300 employees including 20 technicians, 10 engineers, and 15 quality control personnel with over 300 pieces of equipment.
Quality Certifications: 8S management, ISO9001 and TS16949 automotive certifications.
Notable Customers: Foxconn, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, 
Technical Specifications
Service Materials Finishes
CNC Machining
Turning and Milling
CNC Turning
Cold Heading
Stamping
Assembly Service
Aluminum: 6061-T6, 6063, 7075-T
Stainless Steel: 303,304,304L,316L
Steel: 4140, Q235, 20#, 45#
Alloy Steel: 5140, 4135, 4140
Titanium: TA1, TA2, TC4
Brass: C36000, C37700, H62
Sandblasting
Anodize Color
Blackening
Zinc/Nickel Plating
Powder Coating
Passivation PVD
Electro Polishing
Laser Etch Logo
Quality Standards
Parameter Specification
Tolerance +/-0.01mm ~ +/-0.05mm
Surface Roughness Ra 0.1~3.2
Inspection Equipment Micrometer, Optical Comparator, CMM, Caliper Vernier, Depth Caliper Vernier
Drawing Formats STEP, STP, GIS, CAD, PDF, DWG, DXF
Product Images
CNC screw close-up view showing precision machining M4 flat head quick release valve screw Straight tooth CNC screw profile Precision screw manufacturing quality CNC screw application in automation Industrial screw close-up detail
Delivery & Service
We support rapid sampling within 3-5 days, flexible small-batch orders, and stable mass production. Complete dimension inspection documents and export-grade packaging available for international orders. Our technical team provides optimized solutions for plug structure, thread standards, and surface treatments based on your specific application requirements.

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this product

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

J
Joe
Canada Aug 30.2026
Auto parts screws - They are made very well. I think this is a relatively reliable Chinese factory.

Contact Us at Any Time

13925509630
No. 9, Shi bi One Alley, Zhangmutou Town, Dongguan City, Guangdong Province
Send your inquiry directly to us