INDUSTRY COMPONENT

Threaded Body

Threaded body is a cylindrical component with external or internal helical ridges used to create secure, pressure-tight connections in fluid and gas systems.

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Component Specifications

Definition
A threaded body is a precision-engineered cylindrical component featuring helical ridges (threads) that mate with corresponding threads on another component to form a mechanical joint. In industrial applications, it serves as the primary structural element in pipe fittings, valves, couplings, and connectors, enabling assembly, disassembly, and maintenance of pressurized systems. Thread geometry (pitch, depth, angle) is standardized to ensure compatibility and sealing performance under various operational conditions including temperature fluctuations, vibration, and pressure loads.
Working Principle
The working principle relies on helical thread engagement between mating components. When rotated, the threads convert rotational torque into axial force, drawing components together to create a mechanical lock. In sealing applications, this axial compression deforms gaskets or sealing surfaces, forming a pressure-tight barrier. Thread geometry (tapered vs. parallel) determines whether sealing occurs through thread interference (NPT) or requires separate sealing elements (BSPP).
Materials
Carbon steel (ASTM A105/A350), stainless steel (304/316), brass (C36000), alloy steel, duplex stainless steel, nickel alloys. Material selection depends on corrosion resistance, pressure rating, temperature range, and fluid compatibility.
Technical Parameters
  • Size Range 1/8" to 12" nominal diameter
  • Thread Type NPT, BSPT, BSPP, UN/UNF, Metric
  • Surface Finish 32-125 µin Ra
  • Pressure Rating 150-2500 PSI
  • Thread Tolerance Class 2A/2B, Class 3A/3B
  • Temperature Range -50°C to 400°C
Standards
ISO 7-1, ISO 228-1, ASME B1.20.1, DIN 2999, DIN 3852

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Threaded Body.

threaded fitting pipe thread NPT connector BSPT body industrial coupling pressure fitting mechanical thread Threaded Body Threaded Body in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Connection Fittings

Mechanical components that join and secure nozzles, pipes, and other elements within a rinsing nozzle array system.

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Outlet Port Fittings

Connective components that interface the gas inlet manifold with downstream distribution lines.

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Engineering Analysis

Risks & Mitigation
  • Thread stripping from overtightening
  • Cross-threading during assembly
  • Corrosion in aggressive environments
  • Leakage from improper sealing
  • Fatigue failure under cyclic loading
FMEA Triads
Trigger: Improper thread engagement during assembly
Failure: Cross-threading leading to connection failure and leakage
Mitigation: Use alignment guides, hand-start threads before torquing, implement visual inspection procedures
Trigger: Corrosion from chemical exposure
Failure: Thread degradation causing loss of sealing pressure and structural integrity
Mitigation: Material selection based on fluid compatibility, protective coatings, regular corrosion monitoring
Trigger: Vibration-induced loosening
Failure: Loss of preload leading to leaks and potential disconnection
Mitigation: Use thread-locking compounds, locking nuts, safety wire, or prevailing torque features

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thread dimensions per ASME B1.20.1 for NPT (±0.003" pitch diameter), ISO 7-1 for taper threads
Test Method
Pressure testing per ISO 5208, helium leak testing, dimensional verification with thread gauges, torque-tension testing

Buyer Feedback

★★★★☆ 4.9 / 5.0 (28 reviews)

"The Threaded Body we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 52+ suppliers for Threaded Body on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Threaded Body is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the difference between NPT and BSPT threaded bodies?

NPT (National Pipe Taper) threads are tapered with a 60° thread angle and seal through thread interference. BSPT (British Standard Pipe Taper) threads are also tapered but have a 55° thread angle. They require thread sealant for proper sealing and are common in international applications.

How do you prevent thread galling in stainless steel threaded bodies?

Use anti-galling compounds, ensure proper lubrication, avoid overtightening, and consider dissimilar material pairings (e.g., brass with stainless steel). Controlled installation torque and slow assembly speeds also reduce galling risk.

What maintenance is required for threaded connections?

Regular inspection for leaks, corrosion, and thread damage. Re-torquing after thermal cycles, replacing worn gaskets/sealants, and cleaning threads before reassembly. Follow manufacturer torque specifications to prevent under/over-tightening.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Thread Guide Threaded End