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Precision Thread Manufacturing

Threading Solutions

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

  • ✓Internal and external thread manufacturing
  • ✓Custom thread profile development
  • ✓Multi-start and special thread forms
  • ✓Quality assurance and documentation
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Precision Threading
Internal & External Solutions

Thread Types & Specifications

Metric Threads

M

ISO standard metric threads with 60° thread angle

Specifications:
  • ■Pitch: 0.25mm to 6mm
  • ■Diameter: M1 to M100
  • ■Tolerance: 4H/6H, 6G/6H
  • ■Material: All metals and plastics
Common Applications:
  • ▶General machinery
  • ▶Automotive components
  • ▶Consumer products
  • ▶Industrial equipment

Unified Threads

UNC/UNF

American standard unified threads with 60° thread angle

Specifications:
  • ■Coarse (UNC) and Fine (UNF) series
  • ■Diameter: #0 to 4 inches
  • ■Tolerance: 2A/2B, 3A/3B
  • ■Material: Steel, aluminum, brass
Common Applications:
  • ▶Aerospace components
  • ▶Military equipment
  • ▶Industrial machinery
  • ▶Automotive systems

Acme Threads

ACME

Trapezoidal thread form for power transmission

Specifications:
  • ■29° thread angle
  • ■Pitch: 2mm to 20mm
  • ■Diameter: 6mm to 200mm
  • ■Material: Steel, bronze, plastic
Common Applications:
  • ▶Lead screws
  • ▶Linear actuators
  • ▶Machine tools
  • ▶Positioning systems

Custom Threads

CT

Specialized thread profiles for unique applications

Specifications:
  • ■Custom thread angles
  • ■Variable pitch designs
  • ■Specialized materials
  • ■Unique profiles
Common Applications:
  • ▶Medical devices
  • ▶Specialized equipment
  • ▶High-pressure systems
  • ▶Unique mechanical interfaces

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.

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

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