Attachment Hook: Shank Diameter 20 mm to 60 mm

Component Specifications

Definition

The attachment hook is a critical load-bearing component integrated into carrier trolleys, engineered to provide a reliable mechanical interface for connecting various loads, fixtures, or tools. It facilitates the safe and efficient transfer of materials along overhead or ground-mounted conveyor systems, ensuring precise positioning and stability during transport operations in manufacturing and logistics environments.

Working Principle

Operates on the principle of mechanical interlocking and load distribution. The hook's geometry (typically a curved or J-shaped design) engages with corresponding attachment points (eyes, loops, or brackets) on loads. When under tension, forces are transferred through the hook's body to the trolley structure, with the design ensuring the load remains securely captured until intentionally released, often through a manual or automated latching mechanism.

Materials

Typically manufactured from high-strength alloy steel (e.g., AISI 4140 or similar grades) for optimal strength-to-weight ratio and fatigue resistance. Surface treatments may include zinc plating, hot-dip galvanizing, or powder coating for corrosion protection in industrial environments. Alternative materials for specific applications include stainless steel (e.g., 316 grade) for corrosive settings or aluminum alloys for lightweight requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	2 kg to 15 kg depending on size
Hook Opening	50 mm to 200 mm
Load Capacity	500 kg to 5000 kg (standard range)
Safety Factor	Minimum 5:1 as per industry standards
Shank Diameter	20 mm to 60 mm
Working Load Limit (WLL)	As per manufacturer rating, typically 1/5 of ultimate strength

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 2415, DIN 15401, ASME B30.10

Parent Products

This component is used in the following industrial products

Carrier Trolley

A rolling component that travels along overhead conveyor tracks to transport suspended loads.

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Engineering Analysis

Risks & Mitigation

Overloading beyond WLL
Fatigue failure from cyclic loading
Wear at contact points reducing strength
Corrosion compromising structural integrity
Improper engagement causing load disconnection
Impact damage from collisions

FMEA Triads

Trigger: Exceeding Working Load Limit
Failure: Plastic deformation or catastrophic fracture
Mitigation: Implement load monitoring systems, clear labeling of WLL, operator training, and regular calibration of weighing devices

Trigger: Fatigue from repeated loading cycles
Failure: Crack initiation and propagation leading to breakage
Mitigation: Design with adequate safety factors, use materials with high fatigue strength, implement regular non-destructive testing (e.g., magnetic particle inspection)

Trigger: Corrosion in harsh environments
Failure: Reduced cross-sectional area and stress corrosion cracking
Mitigation: Apply appropriate protective coatings, select corrosion-resistant materials (e.g., stainless steel), establish regular cleaning and maintenance schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 2768-m, critical bore and thread tolerances typically H7/g6 or as specified

Test Method

Proof load testing at 2x WLL, non-destructive testing (magnetic particle or dye penetrant), dimensional verification, material certification per EN 10204 3.1

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 Attachment Hook

Manufacturer profiles associated with Attachment Hook.

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Frequently Asked Questions

What is the difference between a hook's Working Load Limit (WLL) and its breaking strength?

The Working Load Limit (WLL) is the maximum load that should be applied during normal service, typically calculated with a safety factor (often 5:1). Breaking strength is the actual load at which the hook will fail. For example, a hook with 5000 kg WLL likely has a breaking strength around 25,000 kg.

How often should attachment hooks be inspected?

Regular visual inspections should be conducted before each use. Formal documented inspections by qualified personnel are recommended every 6 to 12 months, or as specified by local regulations and manufacturer guidelines, with particular attention to wear, deformation, and corrosion.

Can attachment hooks be used for lifting people?

No, standard industrial attachment hooks are not designed or certified for personnel lifting. Specialized hooks meeting specific safety standards (like EN 13157 for man-riding) are required for such applications.

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.

Attachment Hook