Adjustment Nut: Torque Range 20 Nm to 200 Nm

Component Specifications

Definition

The Adjustment Nut is a precision-engineered threaded fastener designed specifically for preload adjustment mechanisms in machinery. It functions by rotating along a threaded shaft or bolt to apply controlled axial force, thereby setting and maintaining the required preload on bearings, springs, or other components. This component ensures optimal performance, reduces vibration, and extends equipment lifespan by maintaining proper tension and alignment.

Working Principle

The Adjustment Nut operates on the screw thread principle, where rotational motion is converted into precise linear displacement. By turning the nut along the threads of a mating shaft or bolt, it moves axially to either increase or decrease the compressive force (preload) applied to adjacent components. Fine-pitch threads allow for micron-level adjustments, enabling exact control over preload settings critical for mechanical stability and performance.

Materials

Typically manufactured from high-strength alloy steel (e.g., AISI 4140, 4340) or stainless steel (e.g., AISI 304, 316) for corrosion resistance. May include surface treatments like zinc plating, black oxide, or phosphate coating for enhanced durability and wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	10mm to 30mm
Diameter	6mm to 50mm
Hardness	28-32 HRC for steel variants
Thread Type	Metric (e.g., M12x1.5) or Imperial (e.g., 1/2-13 UNC)
Thread Pitch	Fine or standard pitch
Torque Range	20 Nm to 200 Nm
Surface Finish	Ra 1.6 μm or better

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 4032, DIN 934, ISO 898-1

Parent Products

This component is used in the following industrial products

Preload Adjustment Mechanism

A mechanical component in end supports or bearings that allows controlled adjustment of the preload force applied to rolling elements.

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Preload Mechanism

A mechanism that applies controlled axial force to eliminate internal clearance and ensure precise positioning in linear motion systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Over-tightening leading to thread stripping or component damage
Under-tightening causing loss of preload and mechanical failure
Corrosion in harsh environments reducing functionality
Misalignment during installation affecting performance

FMEA Triads

Trigger: Incorrect torque application during installation
Failure: Thread deformation or breakage, loss of preload
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications; implement torque verification procedures.

Trigger: Exposure to corrosive chemicals or moisture
Failure: Corrosion leading to seized threads or reduced strength
Mitigation: Select corrosion-resistant materials (e.g., stainless steel) or apply protective coatings; conduct regular inspections in harsh environments.

Trigger: Vibration or dynamic loads in operation
Failure: Nut loosening over time, loss of preload
Mitigation: Use locking mechanisms (e.g., locknuts, thread-locking adhesives); schedule periodic maintenance checks for re-tightening.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Thread tolerance per ISO 965-1 (e.g., 6g for external threads), dimensional tolerance ±0.1mm

Test Method

Torque testing per ISO 16047, hardness testing per ISO 6508, corrosion resistance per ASTM B117 salt spray test

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 Adjustment Nut

Manufacturer profiles associated with Adjustment Nut.

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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 an Adjustment Nut?

Its primary function is to apply and maintain precise preload on mechanical components like bearings or springs, ensuring optimal alignment, reducing vibration, and preventing premature wear.

How do I select the right Adjustment Nut for my application?

Consider thread type/size, material compatibility with the environment (e.g., corrosion resistance), required torque capacity, and adherence to standards like ISO or DIN. Consult engineering specifications for preload requirements.

Can Adjustment Nuts be reused?

Yes, if undamaged and within tolerance limits. However, inspect for thread wear, deformation, or corrosion before reuse, as these can compromise preload accuracy and safety.

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.

Adjustment Nut