INDUSTRY COMPONENT

Fastening Bolts

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

View Specifications

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
ParameterTypical rangeNotes & selection driver
Length20-100mm (depending on profile thickness)
Head TypeHexagonal (ISO 4014/4017)
Thread TypeMetric coarse (M6, M8, M10)
Torque Range10-50 Nm (varies by size)
Strength Grade8.8, 10.9, or A2-70
Surface FinishZinc-plated, galvanized, or passivated

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 898-1, ISO 4014, ISO 4017, DIN 933, DIN 931

Parent Products

This component is used in the following industrial products

Aluminum Profile Corner Connector

The Aluminum Profile Corner Connector is a precision-machined aluminum alloy component designed to securely join two aluminum extrusion profiles at 90-degree angles in structural frameworks.

View Product Details

Leather Drumming Paddle Assembly

Mechanical paddle assembly for leather tanning drum agitation and chemical distribution.

View Product Details

Shaft Coupling / Adapter

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

View Product Details

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Fastening Bolts

Manufacturer profiles associated with Fastening Bolts.

Sourcing Fastening Bolts from China?
Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.
Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Related Components

Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.
Seal Groove
Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
Yoke Bracket
Get QuotesChat