Threaded Body: Temperature Range -50°C to 400°C

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

Parameter	Typical range	Notes & selection driver
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

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 7-1, ISO 228-1, ASME B1.20.1, DIN 2999, DIN 3852

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.

View Product Details

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

Typical Suppliers & Equivalents

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

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 Body

Manufacturer profiles associated with Threaded Body.

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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.

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.

Threaded Body