INDUSTRY COMPONENT

Set Screw Holes

Precision machined holes in hubs designed to accommodate set screws for secure component attachment and torque transmission.

View Specifications

Component Specifications

Definition
Set screw holes are precisely engineered cylindrical or threaded cavities machined into hub components, typically positioned radially or axially to accept set screws. These holes serve as anchoring points where set screws exert clamping force against shafts, gears, or other mating components to prevent relative motion, transmit torque, and maintain precise alignment in mechanical assemblies. The holes are characterized by specific thread specifications, depth, diameter, and positional accuracy relative to the hub's centerline.
Working Principle
Set screw holes function by providing a threaded interface where set screws can be tightened to create radial pressure against a shaft or component. The screw's tip (flat, cup, cone, or knurled) engages with the mating surface, generating friction and mechanical interference that prevents rotational slippage and axial movement. The hole's thread geometry converts rotational torque from the screwdriver into linear clamping force, while the hole's depth and diameter ensure proper screw engagement without compromising hub structural integrity.
Materials
Typically machined into the same material as the hub: carbon steel (AISI 1018, 1045), alloy steel (4140, 4340), stainless steel (304, 316), aluminum (6061-T6, 7075), or ductile iron. Threads may be cut, rolled, or tapped with material hardness considerations to prevent stripping.
Technical Parameters
  • tolerance H7 for hole diameter, ±0.1mm positional
  • hole_depth 1.5D to 2.5D (where D is screw diameter)
  • countersink 82° or 90° for flat head screws when specified
  • thread_size M3 to M12 metric, #4-40 to 1/2-13 UNC/UNF imperial
  • thread_type ISO metric coarse/fine, UNC, UNF, BSW
  • thread_class 6H for internal threads
  • surface_finish Ra 3.2 μm or better
Standards
ISO 4762, ISO 4026, DIN 913, DIN 914, ASME B18.3

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Set Screw Holes.

set screw hole hub fastening threaded hole mechanical locking torque transmission industrial hub design fastening engineering Set Screw Holes Set Screw Holes in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Hub

The central mounting component of a mixing impeller that connects the blades to the drive shaft.

View Product Details

Mounting Hub

A mechanical component that serves as the central mounting point for a drive shaft assembly, providing secure attachment and alignment.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thread stripping under excessive torque
  • Stress concentration around hole edges
  • Corrosion in threaded areas
  • Improper alignment causing uneven clamping
  • Fatigue failure from cyclic loading
FMEA Triads
Trigger: Insufficient thread engagement depth
Failure: Screw loosening under vibration or load
Mitigation: Design holes with minimum 1.5D engagement; use thread locking compounds; specify proper tightening torque
Trigger: Poor hole alignment with mating component
Failure: Eccentric loading and premature wear
Mitigation: Implement precise machining tolerances (±0.05mm); use jigs/fixtures; verify alignment during assembly
Trigger: Material incompatibility between screw and hub
Failure: Galvanic corrosion or thread galling
Mitigation: Select compatible materials; use anti-seize compounds; specify protective coatings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Positional tolerance ±0.1mm, thread pitch diameter tolerance per ISO 965-1 6H class
Test Method
Go/no-go thread gauging, coordinate measuring machine (CMM) verification, torque-to-failure testing, vibration testing per ISO 16047

Buyer Feedback

★★★★☆ 4.8 / 5.0 (36 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Set Screw Holes meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Set Screw Holes arrived with full certification."

Related Components

Machine Frame
The rigid structural foundation of a CNC wood router that provides stability, vibration damping, and precision alignment for cutting operations.
pH Sensor Assembly
Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications
Load Cell Assembly
Precision load cell assembly for automated powder dispensing systems
Dust Collection Port
A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.

Frequently Asked Questions

What is the primary function of set screw holes in hubs?

To provide secure threaded anchoring points for set screws that prevent relative rotation and axial movement between the hub and mating components like shafts or gears.

How deep should a set screw hole be machined?

Typically 1.5 to 2.5 times the screw diameter to ensure sufficient thread engagement without weakening the hub wall, with exact depth depending on material and load requirements.

Can set screw holes be added to existing hubs?

Yes, through drilling and tapping operations, but careful consideration must be given to wall thickness, existing stress concentrations, and alignment with mating components.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Set Screw Holes

Set Screw Set Screws