INDUSTRY COMPONENT

Fastening Bolts

Fastening bolts are precision-engineered threaded fasteners used to securely join aluminum profile corner connectors in structural frameworks.

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Component Specifications

Definition
Fastening bolts are mechanical fasteners with external threads designed to mate with internal threads in nuts or tapped holes. In aluminum profile corner connectors, they provide rigid, adjustable connections between extruded aluminum profiles, ensuring structural integrity through controlled clamping force. These bolts typically feature hexagonal heads for torque application and are engineered to withstand shear, tensile, and vibrational loads in modular assembly systems.
Working Principle
Fastening bolts work on the principle of threaded engagement and torque-induced clamping force. When tightened, the bolt's threads engage with corresponding threads in the aluminum profile or connector, creating axial tension that compresses the joined components together. This tension generates friction at the interface, preventing relative movement and maintaining structural stability under operational loads.
Materials
Typically made from medium-carbon steel (grade 8.8 or 10.9) with zinc plating or hot-dip galvanizing for corrosion resistance. For aluminum compatibility, stainless steel (A2/A4-70/80) or aluminum alloy bolts are used to prevent galvanic corrosion. High-strength applications may use alloy steel (grade 12.9).
Technical Parameters
  • Length 20-100mm (depending on profile thickness)
  • Head Type Hexagonal (ISO 4014/4017)
  • Thread Type Metric coarse (M6, M8, M10)
  • Torque Range 10-50 Nm (varies by size)
  • Strength Grade 8.8, 10.9, or A2-70
  • Surface Finish Zinc-plated, galvanized, or passivated
Standards
ISO 898-1, ISO 4014, ISO 4017, DIN 933, DIN 931

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fastening Bolts.

fastening bolts aluminum profile connectors structural fasteners metric bolts industrial fasteners corner bracket bolts assembly hardware Fastening Bolts in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Aluminum Profile Corner Connector

Structural connector for joining aluminum extrusion profiles at right angles

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Shaft Coupling / Adapter

A mechanical component that connects two rotating shafts to transmit torque while accommodating misalignment.

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Engineering Analysis

Risks & Mitigation
  • Thread stripping in aluminum
  • Over-torquing causing bolt failure
  • Galvanic corrosion
  • Vibration-induced loosening
  • Improper alignment causing shear stress
FMEA Triads
Trigger: Insufficient torque during installation
Failure: Joint loosening under vibration, leading to structural instability
Mitigation: Implement torque verification procedures, use thread-locking compounds, and conduct regular maintenance checks
Trigger: Material incompatibility in corrosive environments
Failure: Galvanic corrosion weakening the connection
Mitigation: Specify compatible materials (stainless steel/aluminum), apply protective coatings, and use insulating elements

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thread tolerance: 6g per ISO 965-1; Length tolerance: ±1mm per ISO 4759-1
Test Method
Tensile testing per ISO 898-1, torque testing per ISO 16047, 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 torque should be applied to fastening bolts in aluminum profiles?

Torque values depend on bolt size and material. For M8 grade 8.8 bolts, typically 20-30 Nm; for M10, 40-50 Nm. Always follow manufacturer specifications and use a calibrated torque wrench to prevent under/over-tightening.

How to prevent galvanic corrosion between steel bolts and aluminum profiles?

Use stainless steel (A2/A4 grade) or aluminum alloy bolts, apply anti-seize compound, or use insulating washers. Avoid direct contact between dissimilar metals in corrosive environments.

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.

Request Manufacturing Insight for Fastening Bolts

Fasteners (e.g., set screws) Fastening Bolts/Clamps