15mm x 5mm x 3mm Neodymium Block Magnet – N52 Grade 

Key Features:

• Dimensions: 15mm Length × 5mm Width × 3mm Thickness (Approx. 5/8" × 3/16" × 1/8")
• Deep-Field Profile: Substantial 3mm thickness increases magnetic volume for deep flux penetration through barriers
• Anti-Pivot Geometry: Elongated rectangular profile provides superior lateral stability and prevents twisting
• Precision Tolerance: ±0.05mm
• Magnet Grade: N52 
• Pull Force: Approx. 5.2 lbs
• Coating: Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer plating 
• Magnetization: Thickness magnetized (Poles on the flat 15x5mm rectangular faces)

Material Description:

Our 15mm x 5mm x 3mm N52 neodymium block magnets represent a heavy-duty solution for low-clearance fastening, alignment, and closure configurations. The narrow 5mm width combined with a 15mm length makes these blocks ideal for running along slim structural seams, window/door frame tracks, and premium cabinetry joints. The thickness-magnetized orientation ensures that the entire 15x5mm surface provides uniform, high-intensity holding power, while the added 3mm depth gives it the necessary reach to project pull through thin wood veneers, plastics, or fabrics without losing its crisp snap. These bars can be seamlessly recessed into routered wood channels, stamped metal tracks, or molded plastics using high-performance epoxy or acrylic adhesives, delivering a clean, completely concealed magnetic latching point that resists rotational shear forces.

Handling Advice: DANGER: Powerful N52 rectangular blocks require precise handling. Sintered neodymium is inherently brittle like ceramic. With over 6 lbs of raw pull force, these bars possess a high snap velocity and attract with considerable force. Because of their rectangular edges and high magnetic pull, letting them leap together freely or snap onto steel surfaces can cause the profiles to chip, crack, or fracture. Always separate individual pieces by sliding them off the stack horizontally rather than pulling them apart vertically, and keep them spaced far apart during assembly.

Warnings and Safety Information:

• Pinch Hazard: Powerful pull force can easily cause sharp skin pinches or small blood blisters if handled carelessly.
• Fragility Hazard: Core is brittle. Prevent high-velocity impact from snapping together to avoid fracturing the block or chipping the plating.
• CHOKING HAZARD: Keep securely stored and out of reach of children and pets.
• Medical Safety: KEEP AWAY from pacemakers and sensitive medical implants at all times.

Applications:

• Heavy-duty concealed latches for custom cabinetry, invisible architectural panels, marine compartments, and access doors
• Anti-rotational structural alignment bars for luxury presentation packaging, premium portfolio folders, and display cases
• Recessed magnetic tracks for commercial retail fixtures, sliding panel assemblies, and tradeshow presentation frames
• High-retention swappable component attachments and flat mounting plates for electronic housing units, sensors, and robotics
• Flush-mount anchor points for thin 3D-printed enclosure panels, battery lids, and automated equipment housing plates