Thread Profile: Surface Finish Ra 0.4μm to 1.6μm

Component Specifications

Definition

A thread profile refers to the precise geometric configuration of a screw thread's cross-section, defined by parameters such as thread angle, pitch, crest, root, and flank. In measuring screws, it ensures accurate dimensional measurement and consistent mechanical engagement. The profile determines the screw's functional characteristics, including load distribution, sealing capability, and resistance to wear and vibration.

Working Principle

The thread profile works by converting rotational motion into linear displacement through helical grooves. In measuring screws, the precise geometry enables accurate linear measurement by ensuring consistent contact and minimal backlash. The profile's shape distributes mechanical loads evenly across thread flanks, maintaining measurement integrity under operational stresses.

Materials

Typically manufactured from hardened alloy steels (e.g., AISI 4140, 4340), stainless steels (304, 316), or tool steels. May include surface treatments like nitriding or chrome plating for wear resistance. Material selection depends on application requirements for strength, corrosion resistance, and dimensional stability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Pitch	0.5mm to 6mm (metric), 4 to 40 TPI (imperial)
Thread Form	V-thread, Acme, Buttress, Square
Thread Angle	60° (Unified), 55° (Whitworth), 30° (Trapezoidal)
Major Diameter	M3 to M100 (metric), #0 to 4" (imperial)
Surface Finish	Ra 0.4μm to 1.6μm
Tolerance Class	4H/4h, 6H/6g, 7H/7e

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 68-1, ISO 965-1, DIN 13, ASME B1.1

Parent Products

This component is used in the following industrial products

Measuring Screw

A precision screw component used for controlled displacement or measurement within metering systems.

View Product Details

Nut

A mechanical component that converts rotary motion into linear motion in ball screw/lead screw assemblies.

View Product Details

Engineering Analysis

Risks & Mitigation

Thread wear leading to measurement inaccuracy
Profile deformation under excessive load
Corrosion affecting geometric integrity
Improper installation causing profile damage

FMEA Triads

Trigger: Inadequate lubrication
Failure: Accelerated thread wear and increased friction
Mitigation: Implement regular lubrication schedule with compatible lubricants

Trigger: Over-torquing during installation
Failure: Thread profile deformation and measurement error
Mitigation: Use calibrated torque tools and follow installation specifications

Trigger: Contamination with abrasive particles
Failure: Premature profile wear and measurement inconsistency
Mitigation: Implement cleanroom installation procedures and protective covers

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01mm for pitch, ±0.5° for thread angle

Test Method

Optical comparator measurement, thread plug gauge verification, coordinate measuring machine analysis

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 Thread Profile

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.

Suzhou Jungu Precision Mould Co., Ltd.

Suzhou, Jiangsu, CN

Also makes: Straightening Roll

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Thread profile and gauge”
View source page ↗ jungumoulds.com · checked 2026-09-10

View profile Send enquiry

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

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 difference between thread profile and thread form?

Thread profile refers to the cross-sectional shape of a single thread, while thread form describes the complete three-dimensional helical structure. The profile is a 2D representation of the thread's geometry.

Why is thread profile critical in measuring screws?

Precise thread profile ensures accurate linear measurement by minimizing backlash and maintaining consistent contact. Any deviation affects measurement accuracy and repeatability.

How does material affect thread profile performance?

Material properties determine wear resistance, dimensional stability, and load capacity. Hardened steels maintain profile accuracy under load, while corrosion-resistant materials prevent degradation in harsh environments.

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.

Thread Profile