Tuning Screw: Length Range 5-30mm, Torque Range 0.1-0.5 N·m

Component Specifications

Definition

A specialized threaded component designed for precise mechanical adjustment of resonant frequency in electromagnetic resonator cavities. It functions by altering the cavity's internal geometry or dielectric properties through controlled insertion depth, enabling fine-tuning of operational frequency in microwave and RF systems.

Working Principle

Operates on mechanical displacement principle where screw insertion changes effective cavity length or volume, thereby shifting resonant frequency according to electromagnetic field distribution. The screw's conductive or dielectric properties interact with electromagnetic fields to modify propagation characteristics.

Materials

Stainless steel (304/316), brass, aluminum alloys, or dielectric materials (PTFE, ceramic) depending on application requirements. Surface plating options include gold, silver, or nickel for enhanced conductivity and corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tolerance	±0.01mm
Thread Type	M2-M6 metric fine thread
Length Range	5-30mm
Torque Range	0.1-0.5 N·m
Temperature Range	-40°C to +150°C
Frequency Adjustment Range	±0.5% to ±2% of center frequency

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 4762, DIN 912, IEC 60153

Parent Products

This component is used in the following industrial products

Resonator Cavity

A precisely engineered hollow structure that resonates at specific frequencies to filter and shape electromagnetic signals.

View Product Details

Engineering Analysis

Risks & Mitigation

Thread galling or stripping
Frequency drift due to thermal expansion
Corrosion in humid environments
Mechanical backlash affecting precision

FMEA Triads

Trigger: Over-torquing during adjustment
Failure: Thread deformation or breakage
Mitigation: Use calibrated torque drivers and implement torque limits

Trigger: Material thermal expansion mismatch
Failure: Frequency instability with temperature changes
Mitigation: Select materials with compatible thermal coefficients and implement temperature compensation

Trigger: Contamination accumulation
Failure: Increased insertion force and inaccurate positioning
Mitigation: Implement cleanroom assembly and regular maintenance schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Positional tolerance ±0.02mm, frequency repeatability ±0.05%

Test Method

Vector network analyzer measurement, insertion loss testing, thermal cycling validation

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 Tuning Screw

Manufacturer profiles associated with Tuning Screw.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a tuning screw in resonator cavities?

The tuning screw provides precise mechanical adjustment of resonant frequency by altering the cavity's internal electromagnetic field distribution through controlled insertion depth.

How does material selection affect tuning screw performance?

Material choice determines electrical conductivity, thermal stability, and mechanical properties. Conductive metals affect field distribution directly, while dielectrics modify effective permittivity.

What maintenance is required for tuning screws?

Regular inspection for thread wear, cleaning to prevent contamination, and periodic recalibration to maintain frequency accuracy. Lubrication may be required depending on material and environment.

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.

Tuning Screw