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Set Screws Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Set screws are headless fasteners with internal threading designed to secure one object within or against another, typically by exerting compressive force through a pointed or flat tip that contacts the shaft surface. They are commonly used in locking devices to prevent relative motion between assembled parts, ensuring precise positioning and torque transmission in mechanical systems.

Working Principle

Set screws work by creating frictional force between the screw tip and the shaft surface when tightened. The screw is threaded into a tapped hole in the outer component (e.g., collar or hub), and its tip presses directly against the shaft, preventing slippage through mechanical interference rather than clamping force from a nut.

Materials

Typically made from alloy steel (e.g., Grade 8.8, 10.9, or 12.9), stainless steel (A2/A4), or brass. Common coatings include zinc plating, black oxide, or dichromate for corrosion resistance.

Technical Parameters

Hardness HRC 28-45 depending on grade
Tip Types Cup point, flat point, cone point, oval point, half dog point
Drive Types Hex socket (Allen), slotted, Phillips, Torx
Thread Type Metric (M3-M20) or Imperial (UNC/UNF)
Torque Specifications Varies by size and material (e.g., M6 steel: 10-12 Nm)

Standards

ISO 4026, ISO 4027, ISO 4028, ISO 4029, DIN 913, DIN 914, DIN 915, DIN 916

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Set Screws.

Parent Products

This component is used in the following industrial products

Locking Device

A mechanical component within an end bearing assembly that secures bearing elements in position to prevent axial movement or rotation.

View Product Details

Engineering Analysis

Risks & Mitigation

Over-tightening can damage shafts
Improper tip selection reduces holding power
Corrosion in harsh environments
Thread stripping in soft materials

FMEA Triads

Trigger: Insufficient torque during installation
Failure: Screw loosens, causing component slippage on shaft
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications

Trigger: Vibration in operational environment
Failure: Fatigue failure or loosening over time
Mitigation: Apply thread-locking adhesives and implement regular maintenance checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Thread tolerance: 6g per ISO 965-1; length tolerance: ±0.5mm for standard sizes

Test Method

Torque-to-failure testing per ISO 898-1; hardness testing per ISO 6508; salt spray testing per ISO 9227 for corrosion resistance

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between cup point and flat point set screws?

Cup point screws have a concave tip that digs into the shaft surface for maximum holding power, while flat point screws distribute pressure over a larger area, minimizing shaft damage and allowing repositioning.

How do I prevent set screws from loosening under vibration?

Use thread-locking compounds (e.g., Loctite), apply proper torque, select cup point tips for better grip, or use double set screws in staggered configurations.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Set Screws