INDUSTRY COMPONENT

Tapped Holes/Grid Pattern

Precision grid of threaded holes on granite surfaces for modular fixturing and positioning in industrial equipment.

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Component Specifications

Definition
A precisely machined pattern of tapped holes arranged in a uniform grid on granite tables or bases, providing standardized mounting points for fixtures, workholding devices, and accessories in precision manufacturing and measurement applications. The grid pattern ensures repeatable positioning and alignment across the entire working surface.
Working Principle
The grid pattern provides a coordinate system of mounting points that allow fixtures and components to be positioned at precise locations. Threaded holes accept bolts to secure items, while the granite's dimensional stability maintains accuracy over time and temperature variations.
Materials
Granite (typically black or gray granite with fine grain structure), Grade A or better with minimal porosity, hardness of 6-7 Mohs, specific density of 2.6-2.8 g/cm³.
Technical Parameters
  • Counterbore Optional for flush mounting
  • Grid Spacing 25mm, 50mm, or 100mm standard intervals
  • Thread Class 6H for metric, 2B for imperial
  • Thread Depth 1.5-2 times bolt diameter
  • Hole Diameter M6, M8, M10, or 1/4-20, 5/16-18, 3/8-16 imperial threads
  • Surface Flatness 0.005mm per 300mm
  • Positional Tolerance ±0.05mm to ±0.1mm
Standards
ISO 230-1, ISO 10791-7, DIN 876, DIN 877

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tapped Holes/Grid Pattern.

granite table tapped holes grid pattern fixtures precision mounting system modular workholding granite base components industrial positioning grid Tapped Holes/Grid Pattern Tapped Holes/Grid Pattern in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Granite Table/Base

A precision granite platform that serves as the stable reference surface and mounting base for a Coordinate Measuring Machine (CMM).

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Engineering Analysis

Risks & Mitigation
  • Thread damage from improper bolt installation
  • Chip formation around hole edges from impacts
  • Debris accumulation affecting positioning accuracy
  • Thermal expansion mismatch with mounted components
FMEA Triads
Trigger: Cross-threading during fixture installation
Failure: Damaged threads requiring hole repair or abandonment
Mitigation: Use guided installation tools, proper training, and thread protectors when not in use
Trigger: Impact damage from dropped tools or components
Failure: Chipped granite around holes affecting positioning reference
Mitigation: Implement protective covers, establish clear work procedures, use designated tool placement areas
Trigger: Thermal gradients across granite surface
Failure: Positional inaccuracy due to differential expansion
Mitigation: Maintain stable environment temperature, allow thermal stabilization after moves, use temperature-compensated measurement systems

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Positional tolerance per ISO 230-1, flatness per DIN 876 Class 00
Test Method
Laser interferometry for positional accuracy, coordinate measuring machines for verification, thread gauges for thread quality

Buyer Feedback

★★★★☆ 4.6 / 5.0 (10 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 Tapped Holes/Grid Pattern meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Tapped Holes/Grid Pattern arrived with full certification."

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Frequently Asked Questions

What are the advantages of granite for tapped hole grid patterns?

Granite provides exceptional dimensional stability, vibration damping, thermal stability, and wear resistance, maintaining precision over decades of use in manufacturing environments.

How are tapped hole grid patterns manufactured on granite surfaces?

Using CNC drilling and tapping machines with diamond-tipped tools, following precise coordinate measurements. The process includes precision leveling, drilling, tapping, and quality verification of each hole position.

What maintenance do granite tapped hole grids require?

Regular cleaning to remove debris from threads, occasional verification of positional accuracy, and protection from impacts that could chip the granite around hole edges.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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