INDUSTRY COMPONENT

Threaded Connection

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

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
ParameterTypical rangeNotes & selection driver
LengthVariable based on application
Thread TypeMetric (M), Unified (UNC/UNF), or API threads
Thread PitchStandard or fine pitch based on diameter
Diameter RangeM6 to M64 (or equivalent)
Surface FinishRa 1.6-3.2 μm
Pressure RatingUp to 10,000 psi (690 bar)
Temperature Range-40°C to 200°C
Thread EngagementMinimum 1.5 times diameter
Torque Specification30-500 Nm depending on size and material

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 898, ISO 965, DIN 13, DIN 934, ASME B1.1, API 5CT

Parent Products

This component is used in the following industrial products

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Threaded Connection

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

NINGBO BEILUN GC-BOB INSTRUMENT CO.,LTD.
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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