Premium 4-inch black woven nylon hook fastener with rubber-based adhesive, 50-yard roll with 5,000 closure life for industrial fastening applications
The 3M™ Hook Fastener SJ3526N is a premium reclosable fastening solution designed for industrial and occupational applications requiring thousands of secure openings and closures. This woven nylon hook fastener features a high-performance rubber-based pressure-sensitive adhesive that delivers fast tack, excellent shear strength, and reliable bonding to a variety of substrates including plastics. With approximately 300 hooks per square inch, the flexible J-shaped hooks engage perfectly with 3M™ Loop Fasteners to create a durable, reusable fastening system that provides an excellent alternative to zippers, screws, snaps, and other traditional closure methods.
The fastener comes in a convenient 4-inch width by 50-yard length roll with a 3-inch core, featuring a 3 mil polyethylene film liner with red 3M print for easy identification. Both the hook and loop components are preshrunk to ensure optimal stability and flatness during use. With a maximum operating temperature of 120°F (49°C), this product is best suited for indoor applications and delivers consistent performance across construction, electronics, furniture, medical device, and general industrial sectors.
The pressure-sensitive adhesive technology eliminates the need for sewing, solvent activation, or bulk adhesive bonding, allowing for quick manual or automatic application. The 5,000 closure life rating demonstrates the exceptional durability of this fastening system, making it an economical choice for applications requiring repeated attachment and detachment cycles. Ideal for securing fabric to furniture cushions, point-of-purchase displays, signage, and general indoor industrial applications.
Key Features
- Woven nylon hook fastener with approximately 300 hooks per square inch for reliable engagement
- High-performance rubber-based pressure-sensitive adhesive with fast tack and excellent shear strength
- Preshrunk hook and loop components ensure stability and flatness during thousands of use cycles
- 5,000 closure life rating demonstrates exceptional durability and reusability
- Bonds to a variety of substrates including plastics, fabric, and industrial materials
- Temperature resistant up to 120°F (49°C) for indoor industrial applications
- 4-inch width by 50-yard length roll with convenient 3-inch core
- Eliminates need for sewing, solvent activation, or bulk adhesive bonding
- Perfect alternative to zippers, screws, snaps, and traditional closure methods
- Ideal for furniture upholstery, point-of-purchase displays, and general industrial fastening
Technical Specifications
| Specification |
Value |
| Product Type | Hook Fastener |
| Brand | 3M |
| Part Number | SJ3526N |
| 3M Product Number | SJ3526NFSR |
| UPC Code | 00021200460791 |
| Product Color | Black |
| Overall Width (Imperial) | 4 in |
| Overall Width (Metric) | 101.6 mm |
| Overall Length (Imperial) | 50 yd |
| Overall Length (Metric) | 45.72 m |
| Core Size (Imperial) | 3 in |
| Core Size (Metric) | 76.2 mm |
| Engaged Thickness (Imperial) | 0.15 in |
| Engaged Thickness (Metric) | 3.8 mm |
| Total Tape Thickness without Liner (Imperial) | 94.488 mil |
| Total Tape Thickness without Liner (Metric) | 2.4 mm |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Backing Material | Nylon |
| Adhesive Type | High Performance Rubber Adhesive |
| Hook Density | Approximately 300 hooks per square inch (46 hooks per square cm) |
| Maximum Operating Temperature (Fahrenheit) | 120°F |
| Maximum Operating Temperature (Celsius) | 49°C |
| Closure Life | 5,000 cycles |
| Product Form | Roll |
| Smallest Saleable Unit | Roll |
| Units per Case | 1.0 |
| Recommended Applications | Interior Mirror & Fixture Attachment, Upholstery & Seating Attachment |
| Suitable Industries | Construction, Electronics, Furniture, General Industrial, Medical, Military & Government, Specialty Vehicles, Transportation |
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