INDUSTRY COMPONENT

Threaded Connection

Threaded connection for secure assembly of well body components using helical ridges.

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Component Specifications

Definition
A mechanical fastening system consisting of male and female threaded components that create a secure, pressure-tight joint through helical engagement, designed specifically for well body assembly in industrial machinery where structural integrity and leak prevention are critical.
Working Principle
Works through helical thread engagement where rotational force converts to axial clamping force, creating mechanical interference and friction that resists separation while maintaining alignment and sealing integrity under operational loads.
Materials
Typically manufactured from alloy steels (AISI 4140, 4340), stainless steels (316L, 17-4PH), or specialized alloys with hardness ratings of 28-32 HRC minimum, often with corrosion-resistant coatings or platings.
Technical Parameters
  • Length Variable based on application
  • Thread Type Metric (M), Unified (UNC/UNF), or API threads
  • Thread Pitch Standard or fine pitch based on diameter
  • Diameter Range M6 to M64 (or equivalent)
  • Surface Finish Ra 1.6-3.2 μm
  • Pressure Rating Up to 10,000 psi (690 bar)
  • Temperature Range -40°C to 200°C
  • Thread Engagement Minimum 1.5 times diameter
  • Torque Specification 30-500 Nm depending on size and material
Standards
ISO 898, ISO 965, DIN 13, DIN 934, ASME B1.1, API 5CT

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Threaded Connection.

threaded connection well body fastening mechanical joints industrial fasteners pressure sealing thread standards torque specifications FMEA analysis Threaded Connection in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Well Body

The main structural component of a thermocouple well that houses and protects the temperature sensor.

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Gas Diffuser

A component in a welding torch that evenly distributes shielding gas around the electrode and weld pool.

View Product Details

Port Body / Fitting

The main structural component of a pressure test port that provides the connection interface and housing for internal elements.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thread stripping
  • Cross-threading
  • Galling
  • Fatigue failure
  • Corrosion-induced weakening
  • Improper torque application
  • Vibration loosening
FMEA Triads
Trigger: Insufficient thread engagement
Failure: Reduced load capacity leading to joint separation
Mitigation: Design minimum 1.5D engagement, implement visual inspection gauges, train assembly personnel
Trigger: Improper torque application
Failure: Under-tightening causes leaks; over-tightening causes thread damage
Mitigation: Use calibrated torque tools, implement torque verification procedures, apply thread lubricants consistently
Trigger: Corrosion in harsh environments
Failure: Thread degradation leading to loss of clamping force
Mitigation: Select corrosion-resistant materials, apply protective coatings, implement regular inspection schedules

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 2768-m for general dimensions, ISO 965 for thread tolerances (6g/6H typical), ±0.1mm for critical dimensions
Test Method
Helix inspection, go/no-go gauging, torque-to-failure testing, pressure cycling tests, metallurgical analysis per ASTM standards

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the main advantages of threaded connections in well body assembly?

Threaded connections provide reliable pressure sealing, easy assembly/disassembly for maintenance, excellent load distribution, and vibration resistance while maintaining precise alignment of components.

How do you prevent thread galling in stainless steel connections?

Use anti-galling compounds, ensure proper lubrication, control assembly speed, maintain clean threads, and consider using dissimilar metals or specialized coatings to reduce friction and material transfer.

What torque control methods ensure proper threaded connection installation?

Methods include torque-only, torque-turn, yield control, and ultrasonic measurement, with selection based on criticality, material properties, and required preload accuracy.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Threaded Body Threaded End