Hook Magnet

Overview

Product Specifications

· Magnet Base: Diameter: 15-50 mm; Thickness: 3-15 mm; Material: Sintered NdFeB (anisotropic); Magnetization direction: Axial (through thickness).

· Hook Dimensions: Length: 20-80 mm; Diameter: 3-10 mm; Material: Stainless steel (304/316), carbon steel with plating, or glass-reinforced nylon.

· Performance: Holding force: 2-50 kg (on 3mm thick steel plate); Operating temperature: -40°C to 80°C (standard grades), up to 150°C (high-temperature grades); Pull-off force: 5-120 N (varies by size and grade).

· Mechanical Features: Swivel rotation (0-360° for swivel models); Load capacity rating (static/dynamic); Threaded or riveted hook-to-magnet connection.

Product Grades

Classified by magnetic strength and environmental resistance:

· Standard Grades (N35-N52): (BH)max 35-52 MGOe, holding force 2-30 kg, suitable for indoor dry environments (home/office use).

· High-Coercivity Grades (N35H-N48SH): (BH)max 35-48 MGOe, Hcj ≥ 900 kA/m, operating temperature 120-150°C, ideal for industrial settings with temperature fluctuations.

· Stainless Steel Hook Grades: Corrosion-resistant variants with 316 stainless steel hooks and Ni-Cu-Ni magnet coating, designed for outdoor or humid environments (e.g., marine, construction sites).

Coatings

· Magnet Core Coatings: Ni-Cu-Ni plating (standard, salt spray resistance ≥ 96 hours); Zinc plating (economical, indoor use only); Epoxy coating (thick, chemical resistance, color options); Parylene coating (thin, conformal, medical/cleanroom applications).

· Hook Coatings: Zinc plating (carbon steel hooks, basic corrosion protection); Chrome plating (aesthetic finish, improved wear resistance); Passivation (stainless steel hooks, enhanced rust resistance); Powder coating (colored, decorative hooks for retail displays).

Application Scope

· Industrial/Workshop: Hanging power tools, cables, safety gear, or measuring equipment on metal workbenches, machinery, or storage racks.

· Home/Kitchen: Mounting utensils, pots, or oven mitts on refrigerator doors; organizing garage tools (screwdrivers, wrenches) on metal pegboards.

· Automotive: Securing emergency kits, flashlights, or cable organizers in cars/vans (on metal body panels); temporary mounting of warning signs on trucks.

· Retail/Exhibition: Display hooks for merchandise (keys, small accessories) on metal shelves; temporary signage mounting at trade shows.

· Construction/Outdoor: Hanging temporary lights, cables, or tools on steel beams; securing tarps or covers on metal structures (temporary use only).

Packaging Information

· Consumer Packaging: Blister packs or clamshells (1-5 pieces) with clear product images, holding force labels, and safety warnings; includes usage instructions.

· Bulk Packaging: Cardboard boxes with dividers or foam inserts (10-50 pieces per box); magnet bases separated by non-magnetic sheets to prevent sticking/damage; desiccant packets included to control moisture.

· Industrial Packaging: Heavy-duty cartons with palletization for large orders; each hook magnet wrapped in protective film; labeled with grade, holding force, dimensions, and batch number.

· Safety Labeling: Mandatory warnings for magnetic field hazards ("Keep away from pacemakers/magnetic storage media") and load capacity limits ("Do not exceed 50% of rated load for dynamic applications").

Common Questions

· Holding Force vs. Surface: Why does holding force decrease on thin metal? Magnetic flux spreads beyond the magnet edge on thin surfaces (≤1mm steel), reducing effective adhesion—use thick steel (≥3mm) for full rated force.

· Swivel Hook Durability: Do swivel hooks loosen over time? High-quality models use ball bearings or locking washers; avoid overloading beyond dynamic load ratings (typically 50% of static holding force).

· Corrosion in Bathrooms/Outdoors: Will they rust? Choose Ni-Cu-Ni plated magnets with 316 stainless steel hooks for humid environments; avoid zinc-plated variants outdoors.

· Removal Damage: Can they scratch painted metal? Use felt-backed variants or apply a protective film between the magnet and surface to prevent scratching.

Magnet Separation: How to separate stuck hook magnets? Slide parallel to the surface (not pull directly) using a plastic tool to reduce shear force; never use metal tools which may chip the coating.