Precision Thread Manufacturing

Threading Solutions

Specialized threading services for critical applications across industries. From standard to custom thread profiles, our precision threading solutions ensure perfect fit, function, and reliability.

  • Internal & External Threading
  • Standard & Custom Thread Profiles
  • Multi-start Threads
  • Left & Right-hand Threads
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Precision Threading
Internal & External Solutions

Thread Types & Specifications

Metric Threads

M

ISO metric thread profiles for global compatibility

Specifications:
  • M1 to M100 diameter range
  • Fine and coarse pitches
  • Classes 4g6g to 6H tolerance
  • Left and right-hand options
Common Applications:
  • Automotive components
  • Industrial machinery
  • Consumer products
  • Aerospace fasteners

Unified Threads

UN

UNC, UNF, UNEF, and UN series threads for American standard applications

Specifications:
  • #0 to 4" diameter range
  • Coarse (UNC) and fine (UNF) series
  • Classes 2A/2B and 3A/3B
  • Special pitch options available
Common Applications:
  • Defense equipment
  • Aerospace components
  • Heavy machinery
  • Oil & gas equipment

Trapezoidal Threads

Tr

High-strength threads designed for motion transfer and load-bearing applications

Specifications:
  • Tr10x2 to Tr300x12 range
  • Single and multi-start options
  • 7H/8h tolerance classes
  • Custom lead angles available
Common Applications:
  • Lead screws
  • Linear actuators
  • Precision motion systems
  • Heavy load applications

Custom Thread Profiles

CT

Specialized thread forms designed to your exact specifications

Specifications:
  • Proprietary thread forms
  • Modified standard threads
  • Special diameter/pitch combinations
  • Application-specific profiles
Common Applications:
  • Medical devices
  • Specialized equipment
  • High-pressure systems
  • Unique mechanical interfaces

Threading Manufacturing Methods

We employ multiple threading techniques to achieve optimal results for different materials, thread types, and precision requirements.

CNC Thread Turning

Advantages:
  • High precision for external threads
  • Excellent surface finish
  • Complex profile capability
  • Suitable for most materials
Best For:
Precision external threads on turned parts
Limitations:
Internal threads in small diameters

Thread Milling

Advantages:
  • Excellent for internal threads
  • Minimal tool pressure
  • Good for hardened materials
  • Single-point capability for large threads
Best For:
Internal threads in harder materials
Limitations:
Very small thread diameters

Thread Grinding

Advantages:
  • Highest precision (±0.005mm)
  • Superior surface finish
  • Ideal for hardened materials
  • Excellent for critical applications
Best For:
High-precision threads in hardened materials
Limitations:
Higher cost, longer production time

Thread Rolling

Advantages:
  • Excellent strength characteristics
  • No material removal
  • High production rates
  • Superior surface finish
Best For:
High-volume external threads in ductile materials
Limitations:
Not suitable for hardened materials or internal threads

Thread Quality Verification

Our comprehensive inspection process ensures threads meet exact specifications and function as intended.

Inspection Methods

Thread Gauging

GO/NO-GO gauges verify thread dimensions meet specified tolerances

Production verificationFirst article inspection

Optical Measurement

Non-contact measurement of thread profile, pitch, and form

Complex thread profilesCritical thread features

CMM Inspection

Coordinate measuring machines for comprehensive thread geometry verification

Thread position verificationComplete thread form analysis

Functional Testing

Assembly testing with mating components to verify fit and function

Critical assembliesHigh-precision requirements

Industry Standards

  • §
    ISO 965 - ISO general-purpose metric screw threads
  • §
    ASME B1.1 - Unified inch screw threads
  • §
    DIN 103 - Trapezoidal threads
  • §
    ISO 5408 - Technical drawings, screw threads

Industry Applications

Aerospace Threading

High-strength, lightweight, vibration-resistant threads

Material Expertise

Our threading capabilities extend across a wide range of materials to meet diverse application requirements.

Steels

  • Carbon steels (1018, 1045, 4140)
  • Stainless steels (303, 304, 316, 17-4PH)
  • Tool steels (A2, D2, H13)
  • Maraging steels
Heat treatment status, hardness, and surface condition affect thread manufacturing method selection.

Non-Ferrous Metals

  • Aluminum alloys (6061, 7075)
  • Titanium alloys (Grade 5, Grade 23)
  • Copper alloys (brass, bronze)
  • Nickel alloys (Inconel, Monel)
Material ductility, galling tendency, and thermal properties influence threading approach.

Specialty Materials

  • Super alloys (Hastelloy, Waspaloy)
  • Precious metals (medical grade)
  • Engineering plastics (PEEK, Delrin)
  • Composite materials
Unique material properties require specialized threading techniques and tooling.

Threading Expertise

Thread Design Consultation

Our engineering team provides expert guidance on thread selection, design optimization, and manufacturing considerations.

  • Optimal thread profile selection
  • Design for manufacturability
  • Cost-effective production methods
  • Performance optimization

Thread Problem Solving

Specialized expertise in resolving threading challenges and improving existing designs.

  • Thread failure analysis
  • Performance improvement
  • Manufacturing optimization
  • Quality enhancement

Custom Thread Development

Development of proprietary thread profiles for specialized applications and unique requirements.

  • Application-specific solutions
  • Intellectual property protection
  • Performance advantages
  • Competitive differentiation

Client Testimonials

"

Their threading expertise solved a critical assembly issue that had plagued our product for years. The custom thread profile they developed improved both assembly time and product reliability.

Engineering Manager, Medical Device Manufacturer
"

The precision of their thread grinding services is exceptional. For our high-pressure components, we won't trust anyone else with our threading requirements.

Production Director, Oil & Gas Equipment Provider
"

Their ability to produce complex multi-start threads with tight tolerances has been crucial for our precision instrument line. Quality and consistency are always outstanding.

Chief Technical Officer, Scientific Instrument Company

Ready to Discuss Your Threading Requirements?

Our threading expertise can help you achieve optimal performance, reliability, and cost-effectiveness for your components.

Partsproto

Professional CNC machining and custom parts manufacturing services, meeting your precision machining needs with rapid delivery of high-quality components.

Contact Us

  • Email: info@partsproto.com
  • Address: 11 Longjiangyi Rd, Dong Guan Shi, Guangdong Province, China, 523690

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