Industrial-grade reclosable fastener with 170 stem density mushroom heads, 1 inch width, 50 yards per roll, non-adhesive back, supports up to 1000 closure cycles with audible snap verification.
The 3M™ Dual Lock™ Reclosable Fastener SJ3442 is an innovative fastening solution featuring black interlocking mushroom-shaped heads with 170 stem density per square inch. This industrial-grade fastener provides strong, reliable, and durable fastening that can be opened and closed multiple times without compromising performance. With a roll width of 1 inch and 50 yards of length per roll, this product comes in a 2-roll case, offering 100 yards total of fastening material for your projects.
Designed as an easy and clear alternative to traditional fastening methods such as screws, nuts, or bolts, the SJ3442 eliminates the need for drilling or screwing. The non-adhesive back allows for flexible attachment using hot melt, epoxy, or liquid adhesives, making it suitable for various industrial applications. The fastener features good temperature resistance up to 220°F (104°C), though actual temperature resistance may vary depending on the adhesive used. It can mate with Type 250 or Type 400 stem densities to provide different strength combinations tailored to specific project requirements.
This reclosable fastener is engineered for indoor and outdoor use, providing exceptional strength through its interlocking mushroom design. When engaged, the stems flex and the mushroom heads slide past each other, creating a secure closure verified by an audible snap. The fastener maintains its strength throughout multiple attachments and detachments, with a closure life of up to 1000 cycles. To disengage, simply peel the pieces apart by hand. With its polyolefin backing material and non-adhesive design, the SJ3442 serves as a lightweight alternative to metal fasteners while remaining hidden beneath surfaces, providing aesthetic improvements and design flexibility for construction, electronics, furniture, medical, and military applications.
Key Features
- Black interlocking mushroom-shaped heads with 170 stem density per square inch for strong, reliable fastening
- Reclosable design allows opening and closing multiple times without performance degradation or strength loss
- Non-adhesive back compatible with hot melt, epoxy, and liquid adhesives for flexible attachment options
- Audible snap verification confirms secure closure and provides tactile feedback during engagement
- Compatible with Type 250 and Type 400 stem densities to customize strength combinations for specific applications
- Temperature resistant up to 220°F (104°C) for reliable performance in varied environments
- Supports up to 1000 closure cycles maintaining consistent strength throughout product lifespan
- Lightweight alternative to metal fasteners providing aesthetic improvements and design flexibility
- Suitable for indoor and outdoor use in construction, electronics, furniture, medical, and military applications
- Easy hand-peel disengagement eliminates need for tools or special removal procedures
Technical Specifications
| Specification |
Value |
| Product Name | 3M Dual Lock Reclosable Fastener SJ3442 |
| Part Number | SJ3442 |
| 3M Product Number | SJ3442 |
| 3M ID | 7010339596 |
| UPC Code | 00021200862304 |
| Product Color | Black |
| Product Form | Roll |
| Overall Width (Imperial) | 1 inch |
| Overall Width (Metric) | 25.4 mm |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.72 meters |
| Engaged Thickness (Imperial) | 0.16 inch |
| Engaged Thickness (Metric) | 4.1 mm |
| Stem Density | 170 stems per square inch |
| Adhesive Type | Non-adhesive |
| Backing Material | Polyolefin |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Temperature Resistance (Peak) | 220°F (104°C) |
| Closure Life | 1000 cycles |
| Flame Retardant | No |
| Units per Case | 2 rolls |
| Smallest Saleable Unit | Roll |
| Brand | 3M Dual Lock |
| Compatible Stem Densities | Type 250, Type 400 |
| Suitable Applications | Construction, Electronics, Furniture, General Industrial, MRO, Medical, Military & Government, Packaging, Retail, Specialty Vehicles, Transportation |
| Attachment Method | Hot melt, epoxy, or liquid adhesives |
| Disengagement Method | Hand peel |
| Use Environment | Indoor and outdoor |
| Intended User | Industrial and occupational use only |
Order 3M Dual Lock Reclosable Fastener SJ3442 Black 1 inch at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
