Professional-grade woven nylon hook fastener with 300 hooks per square inch, no adhesive or liner, designed for industrial applications including apparel, upholstery, and temporary fastening with durability for thousands of closures.
The 3M™ Hook Fastener SJ3402 is a professional-grade, non-adhesive reclosable fastening solution designed for industrial and occupational applications. This woven nylon hook fastener features approximately 300 hooks per square inch (46 hooks per square centimeter) that protrude from a durable nylon backing, providing exceptional design flexibility and fast product assembly. When paired with 3M™ Loop Fasteners, this fastener delivers durability for thousands of openings and closures, making it an ideal alternative to traditional zippers, screws, snaps, and other conventional fastening methods.
The SJ3402 comes without adhesive or liner, allowing for easy customization through sewing or attachment with hot melt or liquid adhesives. This design flexibility makes it perfect for fabric-based applications including uniforms, gloves, clothing, seat cushions, and carpet panel attachments. The fastener features excellent temperature resistance up to 200°F (93°C) and performs reliably in both indoor and outdoor environments. Both the hook and corresponding loop are preshrunk to ensure stability and flatness, providing a tailored appearance for fabrics and garments that is both washable and dry cleanable.
This product is supplied in a convenient roll format measuring 2 inches wide by 50 yards long, with 6 rolls per case. The engaged thickness of 3.8mm (0.15 inches) provides optimal performance without excessive bulk. Engineered for industrial use only, the 3M Hook Fastener SJ3402 represents the company's commitment to delivering high-quality fastening solutions that meet rigorous industrial standards and provide reliable performance across diverse applications.
Key Features
- Woven nylon construction with approximately 300 hooks per square inch for superior engagement
- No adhesive or liner allows attachment by sewing, hot melt, or liquid adhesives for maximum customization
- Preshrunk hook and loop for guaranteed stability and flatness in finished applications
- Temperature resistance up to 200°F (93°C) for reliable performance in demanding environments
- Durable reclosable fastener providing thousands of openings and closures when paired with 3M Loop Fasteners
- Suitable for both indoor and outdoor use with excellent washability and dry cleanability
- Alternative solution to zippers, screws, snaps, and traditional fastening methods
- Industrial-grade quality with consistent performance across diverse fabric-based applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Hook Fastener SJ3402 |
| Part Number | SJ3402 |
| UPC Code | 00021200625596 |
| Product Color | Black |
| Backing Material | Woven Nylon |
| Product Form | Roll |
| Overall Width (Imperial) | 2 inches |
| Overall Width (Metric) | 50.8 mm |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.72 meters |
| Total Tape Thickness without Liner (Imperial) | 78.74 mil |
| Total Tape Thickness without Liner (Metric) | 2 mm |
| Engaged Thickness (Imperial) | 0.15 inches |
| Engaged Thickness (Metric) | 3.8 mm |
| Core Size (Imperial) | 2.953 inches |
| Core Size (Metric) | 75 mm |
| Hook Density | Approximately 300 hooks per square inch (46 hooks per square centimeter) |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Closure Life | 5000+ cycles |
| Units per Case | 6 rolls |
| Smallest Saleable Unit | Roll |
| Adhesive Type | No adhesive (non-adhesive) |
| Liner | No liner |
| Attachment Method | Sewing, hot melt adhesive, or liquid adhesive |
| Product Type | Hook Fastener |
| Brand | 3M™ |
| Features | Industrial Applications |
| Industries | Construction, Electronics, Furniture, General Industrial, Medical, Military & Government, Specialty Vehicles, Transportation |
| Recommended Applications | Uniforms, Gloves, Clothing, Seat Cushions, Carpet Panel Attachments, Apparel Closure, Floor Mat Attachment, Graphic Attachment, Gym Mat Attachment, Interior Mirror & Fixture Attachment, Light Panel Attachment, Mounting & Trim Attachment, Mounting Airplane Seat Covers, Temporary Fastening, Upholstery & Seating Attachment |
| Washability | Washable and dry cleanable |
| Environmental Use | Suitable for indoor and outdoor use |
| Complementary Product | 3M™ Loop Fastener SJ3401 |
| Use Classification | Industrial/Occupational use only - Not for consumer sale or use |
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