INDUSTRY COMPONENT

Fastening Holes

Precision-drilled holes in mounting frames designed for secure component attachment using bolts, screws, or rivets in industrial machinery.

View Specifications

Component Specifications

Definition
Fastening holes are engineered apertures in mounting frames that provide precise locations for securing components through mechanical fasteners. These holes are typically drilled, reamed, or tapped to exact specifications to ensure proper alignment, load distribution, and vibration resistance in industrial applications. They serve as critical connection points that maintain structural integrity while allowing for assembly, disassembly, and maintenance of machine components.
Working Principle
Fastening holes work by providing geometrically precise locations where mechanical fasteners (bolts, screws, rivets) can be inserted to create secure connections between the mounting frame and attached components. The holes distribute clamping forces evenly across the frame material, preventing stress concentration while maintaining alignment. Threaded holes create internal mating surfaces for screws, while through-holes allow bolts to pass through for nut fastening on the opposite side.
Materials
Typically matches the mounting frame material: carbon steel (A36, 1018, 1045), stainless steel (304, 316), aluminum alloys (6061, 7075), or engineered plastics. Hole surfaces may have additional treatments: zinc plating, anodizing, or passivation for corrosion resistance.
Technical Parameters
  • thread_class 6H for internal threads, 6g for external threads
  • surface_finish Ra 1.6μm to 3.2μm
  • countersink_angle 82°, 90°, or 100°
  • positional_tolerance ±0.05mm to ±0.2mm
  • minimum_edge_distance 1.5× hole diameter
  • hole_diameter_tolerance ±0.1mm to ±0.01mm
Standards
ISO 273, ISO 4759-1, DIN 76-1, DIN 931, ASME B18.2.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fastening Holes.

fastening holes mounting frame holes industrial fasteners precision drilling threaded holes machine assembly bolt holes fastener compatibility industrial engineering components Fastening Holes in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Mounting Frame

Structural component designed to securely hold and position safety interlock and viewport assemblies within industrial equipment.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thread stripping from over-torquing
  • Hole elongation from cyclic loading
  • Corrosion in harsh environments
  • Misalignment causing stress concentration
  • Fatigue failure at hole edges
FMEA Triads
Trigger: Incorrect hole diameter or positional tolerance
Failure: Misalignment during assembly leading to improper fastener seating
Mitigation: Implement statistical process control (SPC) for drilling operations and use coordinate measuring machines (CMM) for verification
Trigger: Insufficient edge distance around holes
Failure: Material tearing or cracking under load
Mitigation: Follow design standards for minimum edge distance (typically 1.5× hole diameter) and conduct finite element analysis (FEA) for stress distribution
Trigger: Corrosive environment without proper surface treatment
Failure: Reduced fastener grip strength and potential seizure
Mitigation: Apply appropriate coatings (zinc plating, anodizing) and specify corrosion-resistant materials for harsh environments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 2768-mK for general tolerances, ISO 4759-1 for thread tolerances
Test Method
Coordinate measuring machine (CMM) verification, go/no-go gauge testing, torque testing per ISO 16047, salt spray testing per ASTM B117 for corrosion resistance

Buyer Feedback

★★★★☆ 4.8 / 5.0 (28 reviews)

"Great transparency on the Fastening Holes components. Essential for our Machinery and Equipment Manufacturing supply chain."

"The Fastening Holes we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 14+ suppliers for Fastening Holes on CNFX, but this spec remains the most cost-effective."

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 are the most critical tolerances for fastening holes in mounting frames?

Positional tolerance (±0.05mm-0.2mm) and diameter tolerance (±0.01mm-0.1mm) are most critical as they ensure proper alignment and fastener fit, preventing misalignment, stress concentration, and assembly issues.

How do I select the right fastening hole type for my application?

Consider load requirements (shear vs. tensile), environmental conditions (corrosion resistance), assembly frequency (threaded vs. through-holes), and material compatibility. Through-holes with nuts are best for high-load applications, while threaded holes suit frequent disassembly needs.

What maintenance do fastening holes require?

Regular inspection for wear, corrosion, or thread damage; cleaning to remove debris; lubrication of threaded holes; and torque verification during reassembly to prevent loosening from vibration.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Fastening Holes

Fastening Hardware Fastening Mechanism