Tensioning Screw: Length Range 20-150 mm, Diameter Range M6-M20

Component Specifications

Definition

A tensioning screw is a threaded fastener designed to create and regulate tension in mechanical assemblies. It functions by converting rotational torque into linear force, allowing precise adjustment of tension levels in belts, chains, cables, or other tensioned elements. These screws often feature fine threads and specialized heads for controlled adjustment and locking mechanisms to maintain set tension under operational loads.

Working Principle

The tensioning screw operates on the screw thread principle, where rotational motion is converted into linear displacement. As the screw is turned, it moves axially relative to the mating component, either directly applying tension or adjusting the position of a tensioning element. The fine pitch threads provide mechanical advantage, allowing precise control over the applied force with minimal rotational input.

Materials

Typically manufactured from high-strength alloy steels (such as AISI 4140, 4340, or 8620), stainless steels (304 or 316), or specialty alloys for corrosion resistance. Surface treatments may include zinc plating, black oxide coating, or phosphate coating for enhanced durability and corrosion protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Head Type	Hex socket, slotted, or specialized tensioning head
Proof Load	70-90% of tensile strength
Thread Type	Metric fine thread (e.g., M8x1.0, M10x1.25)
Length Range	20-150 mm
Diameter Range	M6-M20
Surface Finish	Ra 1.6-3.2 μm
Tensile Strength	800-1200 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 4762, DIN 912, ISO 898-1

Parent Products

This component is used in the following industrial products

Tensioning Mechanism

A mechanical component that applies and maintains precise tension on the cutting blade in an industrial dough divider.

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Engineering Analysis

Risks & Mitigation

Thread stripping under excessive torque
Corrosion in harsh environments
Fatigue failure from cyclic loading
Improper tension leading to system failure

FMEA Triads

Trigger: Over-torquing during installation
Failure: Thread stripping or screw fracture
Mitigation: Use calibrated torque wrenches and follow manufacturer torque specifications

Trigger: Vibration during operation
Failure: Screw loosening and loss of tension
Mitigation: Implement locking mechanisms (lock nuts, thread locking compounds) and regular tension verification

Trigger: Corrosive environment exposure
Failure: Reduced strength and potential fracture
Mitigation: Select appropriate corrosion-resistant materials and protective coatings

Industrial Ecosystem

Compatible With

Tensioning mechanisms, conveyor systems, printing presses, textile machinery, packaging equipment

Typical Suppliers & Equivalents

Bosch Rexroth, SKF, Timken, NSK, THK

Compliance & Inspection

Tolerance

ISO 2768-m for general dimensions, thread tolerance 6g/6H

Test Method

Tensile testing per ISO 898-1, torque-tension testing, salt spray testing per ISO 9227 for corrosion resistance

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 Tensioning Screw

Manufacturer profiles associated with Tensioning Screw.

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Frequently Asked Questions

What is the difference between a tensioning screw and a regular bolt?

Tensioning screws have finer threads for precise adjustment, often feature specialized heads for tension measurement, and are designed specifically for maintaining calibrated tension rather than just fastening components together.

How often should tensioning screws be inspected?

Inspect tensioning screws during routine maintenance cycles (typically every 500-1000 operating hours), checking for thread wear, corrosion, and proper tension calibration. Replace if any deformation or thread damage is detected.

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.

Tensioning Screw