MachineU > China Products > Tools & Hardware > Fasteners > Bolts > Bolts
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Specifications
Certification :
ISO9001 & TS16949
Corrosion Resistance :
High
Model Number :
ST-300047
Size :
12.0MM
MOQ :
1PCS
Delivery Time :
Communication
Sample period :
20 days
Material :
Copper
Payment Terms :
T/T
Precision :
Min0.01
Length :
31MM
Price :
5-10 USD per item
Specification :
Customized
product name :
Ball screw
Supply Ability :
10000PCS per day
head shape :
Circle Head Hexagon
Category :
Screws
Brand Name :
SITUO
Surface treatment :
Passivation
Packaging Details :
Communication
Processing technology :
Cold heading
Place of Origin :
GuangDong Dongguan
Color :
Customized
Description
Custom Copper 1/4‑20 Screw, CNC Machined 1/4‑20 UNC Brass Copper Fastener Mechanical Hardware Bolt
Product Overview

Situo Hardware specializes in custom 1/4‑20 UNC red copper screws, US‑thread conductive copper bolts, and high‑thermal‑conductivity copper machine screws. Our hardware serves electrical power equipment, new‑energy modules, earthing assemblies, heat dissipation modules, instruments, and communication cabinet assembly.

This series of 1/4‑20 red copper screws are manufactured from high‑purity T2 red copper using a composite process: cold heading forming followed by CNC precision machining. This approach preserves continuous metal grain flow for improved tensile and anti‑fatigue performance while achieving tight tolerances for 1/4‑20 UNC thread, head dimension, and other critical features.

Technical Advantages
High‑Purity T2 Red Copper

≥99.9% Cu content delivers outstanding electrical and thermal conductivity with low contact resistance. Tin‑plating or nickel‑plating options reduce oxidation and stabilize electrical performance.

Composite Manufacturing Process

Cold heading forms main body with uninterrupted metal grain flow, followed by CNC precision machining to achieve strict tolerances. This hybrid method provides superior strength and material utilization.

Precision 1/4‑20 UNC Thread

Thread rolling with full‑profile teeth and 100% go/no‑go gauge inspection ensures smooth engagement and anti‑stripping performance. Full‑thread and half‑thread versions available.

Flexible Customization

Available head types include pan head, socket cap head, countersunk head, hex head, and more. Adjustable shank length, smooth‑shaft length, and effective thread length.

Surface Treatment Options

Natural copper passivation, tin‑plating, nickel‑plating, and polishing options to reduce contact resistance, retard tarnishing, and improve solderability.

Quality Control System

Comprehensive inspection including raw‑material verification, dimension inspection, thread gauge testing, and surface quality checks to ensure batch‑to‑batch consistency.

Application Scenarios
  • 1/4‑20 red copper fasteners for conductive connection in electrical equipment and earthing assemblies
  • Thermally compressive red copper screws for new‑energy and heat‑dissipation modules
  • Conductive earthing fasteners for communication cabinets and instruments
  • US‑thread red copper machine screws for power terminals and copper‑bar transition joints
  • Automation components requiring combined electrical conduction, heat dissipation and assembly precision
  • Replacement & retrofit conductive thermal fasteners for devices with 1/4‑20 UNC ports
Manufacturing Capabilities
Advanced Equipment & Technology

We utilize advanced equipment from Japan and Germany including CNC 5-axis and 6-axis machines. Maximum processing outer diameter: 60mm. Minimum control tolerance: 0.001mm.

Equipment Portfolio

Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment.

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 include Foxconn, Husqvarna, Shimano, NVIDIA, DJI Drones,

Technical Specifications
Service CNC Machining, Turning and Milling, CNC Turning, Cold heading, Stamping, Assembly Service
Materials Aluminum, Stainless Steel, Steel, Alloy Steel, Titanium, Brass, Copper, Bronze, Magnesium Alloy, Engineering Plastics
Finishes Sandblasting, Anodize color, Blackening, Zinc/Nickel Plating, Polish, Powder coating, Passivation PVD, and more
Drawing Formats STEP, STP, GIS, CAD, PDF, DWG, DXF etc or samples
Tolerance +/-0.01mm ~ +/-0.05mm
Surface Roughness Ra 0.1~3.2
Product Images
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
CNC screw close-up view
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
M4 flat head screw
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Straight tooth CNC screw
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Precision manufacturing
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Automation application
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Industrial screw detail
Send your message to this supplier
Send Now

Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt

Ask Latest Price
Product Detail
Certification :
ISO9001 & TS16949
Corrosion Resistance :
High
Model Number :
ST-300047
Size :
12.0MM
MOQ :
1PCS
Delivery Time :
Communication
Contact Supplier
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt
Custom 1/4-20 UNC Copper Screw with High Corrosion Resistance and Customized Length CNC Machined Bolt

Dongguan Situo Hardware Products Technology Co., Ltd

Verified Supplier
1 Years
guangdong, dongguan
Since 2019
Business Type :
Manufacturer, Seller
Main Products :
CNC Hardware Parts, Connector Hardware, CNC Screws
Total Annual :
2800000-3500000
Employee Number :
50~100
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products CNC Screws
MachineU China Products Tools & Hardware Fasteners Bolts Bolts
Contact Supplier
Submit Requirement