Threaded Shank: Shank Diameter 6-25 mm, Length 30-100 mm

Component Specifications

Definition

A precision-machined cylindrical component with external threads, designed to connect drill bits to the rotary-percussive drill head. It transmits rotational torque and percussive forces while maintaining alignment and preventing bit slippage during operation.

Working Principle

The threaded shank engages with corresponding internal threads in the drill chuck or holder, creating a mechanical lock that transfers rotational energy from the drill motor to the drill bit. The thread design ensures secure attachment while allowing quick bit changes.

Materials

High-strength alloy steel (e.g., 4140 or 4340), heat-treated to HRC 40-50 for optimal toughness and wear resistance. Surface treatments may include black oxide or phosphate coating for corrosion protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	30-100 mm
Thread Type	Metric (e.g., M10x1.5) or Imperial (e.g., 3/8-24 UNF)
Thread Length	15-40 mm
Shank Diameter	6-25 mm
Surface Hardness	HRC 40-50
Tensile Strength	≥ 1000 MPa

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 1173, DIN 6535

Parent Products

This component is used in the following industrial products

Rotary-Percussive Drill Head

A drilling component that combines rotary and percussive actions to bore holes in rock formations.

View Product Details

Engineering Analysis

Risks & Mitigation

Thread stripping due to over-torquing
Fatigue failure from cyclic loading
Corrosion in wet environments

FMEA Triads

Trigger: Improper thread engagement during bit installation
Failure: Bit detachment during operation
Mitigation: Use torque wrenches for installation and implement visual inspection protocols

Trigger: Material fatigue from high-cycle percussive loads
Failure: Fracture at the thread root
Mitigation: Regular replacement based on usage hours and non-destructive testing (e.g., magnetic particle inspection)

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Thread tolerance: 6g per ISO 965-1, diameter tolerance: ±0.05 mm

Test Method

Torque testing per ISO 1173, hardness testing per ASTM E18, dimensional inspection with thread gauges

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 Shank

Manufacturer profiles associated with Threaded Shank.

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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 threaded shank in a rotary-percussive drill head?

It securely attaches the drill bit to the drill head while transmitting both rotational torque and percussive impact forces during drilling operations.

How do I select the correct threaded shank for my drill?

Match the thread type and dimensions (e.g., M10x1.5) to your drill chuck specifications, and ensure the material and hardness meet the required operational loads and environmental conditions.

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 Shank