Professional-grade reclosable fastener with 5x stronger holding power than hook-and-loop, featuring hidden snap-lock closure and modified acrylic adhesive for industrial applications.
The 3M™ Dual Lock™ Reclosable Fastener SJ3871 is an innovative black polypropylene fastening system featuring a modified acrylic adhesive backing that provides up to five times stronger holding power compared to traditional hook-and-loop fasteners. This professional-grade fastener is specifically engineered for industrial and occupational applications, offering snap-in-place installation that eliminates the need for screws, nails, snaps, and rivets. With a slim 0.24" engaged thickness and Type 400 stem density, this fastener can be opened and closed repeatedly up to 1,000 times before losing 50% of its original strength, making it ideal for applications requiring frequent access or repositioning.
Features unique mushroom-shaped heads that snap shut and stay locked when pressed together, creating an audible confirmation of engagement. The fastener's hidden closure design provides a clean, smooth appearance when mated, with fasteners completely concealed from view. The modified acrylic adhesive bonds effectively to many plastics including polyethylene, acrylic, polycarbonate, and ABS, as well as powder-coated paints and medium to low surface energy materials with minimal surface preparation required. The Type 400 stem density fastener mates perfectly with Type 170 or 250 fasteners, giving users flexibility in selecting appropriate closure strength for their specific applications.
This versatile reclosable fastening system is suitable for both indoor and outdoor use, with medium temperature resistance up to 140°F (60°C). Recommended applications include transportation, electronics, medical devices, packaging, point-of-purchase displays, construction, furniture, and specialty vehicles. Each case contains 4 rolls of 45 yards, providing substantial coverage for industrial projects. The product comes with a red polyethylene liner and offers maintenance, repair, and operations (MRO) benefits through its reusable, repositionable design that reduces material waste and installation costs while maintaining superior attachment strength.
Key Features
- Up to 5x stronger tensile strength than hook-and-loop fasteners
- Reusable snap-lock mechanism with up to 1000 open-close cycles
- Hidden mushroom-shaped heads provide clean, smooth appearance when closed
- Modified acrylic adhesive bonds to plastics, powder-coated paints, and low surface energy materials
- Snap-in-place installation eliminates screws, nails, snaps and rivets
- Type 400 stem density compatible with Type 170 or 250 fasteners
- Suitable for both indoor and outdoor applications
- Medium temperature resistance up to 140°F (60°C)
- Slim 0.24" engaged thickness for minimal profile
- Four 45-yard rolls per case for industrial projects
Technical Specifications
| Specification |
Value |
| Part Number | SJ3871 |
| Product Color | Black |
| Overall Width (Imperial) | 0.5 in |
| Overall Width (Metric) | 12.7 mm |
| Overall Length (Imperial) | 45 yd |
| Overall Length (Metric) | 41.14 m |
| Engaged Thickness (Imperial) | 0.24 in |
| Engaged Thickness (Metric) | 6.1 mm |
| Product Form | Roll |
| Adhesive Type | Modified Acrylic |
| Adhesive Color | Black |
| Stem Density | Type 400 |
| Closure Life | 1000 cycles |
| Maximum Operating Temperature (Fahrenheit) | 180°F |
| Maximum Operating Temperature (Celsius) | 82°C |
| Primary Liner | Red Polyethylene |
| Primary Liner Color | Red |
| Primary Liner Thickness (Imperial) | 5 mil |
| Primary Liner Thickness (Metric) | 0.13 mm |
| Indoor/Outdoor | Indoor/Outdoor |
| Flame Retardant | No |
| Units per Case | 4 rolls |
| Smallest Saleable Unit | Roll |
| UPC Code | 00051111187968 |
| 3M ID | 7000124668 |
Order 3M Dual Lock Reclosable Fastener SJ3871 Black 45yd at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
