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3M™ Dual Lock™ Reclosable Fastener SJ3540, Black, 2 in x 45 yd, Type 250, 1 Roll/Case
$654.73 / Roll
| SKU | 7100406638 |
|---|---|
| Legacy SKU | 70011147421 |
| UPC | 00068060767585 |
| Product Number | SJ3540 |
3M Dual Lock Reclosable Fastener SJ3540 is the easy and clear alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including many plastics and low surface energy materials. Durable and secure, 3M Dual Lock Reclosable Fastener SJ3540 has exceptional strength through its interlocking mushroom-shaped heads (250 stem density per square
- Black, interlocking mushroom-shaped heads (250 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times
- Mates with Type 170, Type 250 or Type 400 stem densities to provide different strength combinations
- Synthetic rubber-based adhesive bonds well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene
- Strong fastener secures with an audible snap, verifying closure
- An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance
- Features good temperature resistance of 120°F (49°C)
Product Dimensions |
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Shipping Dimensions |
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| Weight | 7.183 lb |
|---|---|
| Length | 21 in |
| Width | 21 in |
| Height | 2.8 in |
| Color | Black |
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PRODUCT FAQ
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What is 3M Dual Lock and how does it work?
3M Dual Lock is a reclosable fastening system that uses interlocking mushroom-shaped heads instead of adhesive. When you press the two surfaces together, the stems engage and lock firmly. You can peel it apart and reattach it thousands of times without losing holding power!
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How many times can I reuse Dual Lock before it stops working?
Dual Lock can be reused up to 100 times or more, depending on your application and how you handle it. This makes it incredibly cost-effective compared to one-time fasteners like tape or velcro alternatives.
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What does "Type 250" mean on this product?
Type 250 refers to the mushroom stem height and density. This specification ensures consistent performance and holding strength. Our Type 250 is ideal for general-purpose applications and provides a good balance between grip strength and ease of separation.
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Is Dual Lock waterproof and can I use it outdoors?
Yes, 3M Dual Lock is water-resistant and can be used in wet environments and outdoor applications. However, for best results and maximum durability, we recommend protecting it from prolonged direct sunlight exposure.
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How do I apply the Dual Lock strips to my surfaces?
One side has pressure-sensitive adhesive backing, so application is simple—just clean your surfaces, peel the backing, and press firmly for about 30 seconds. Make sure the surface is dry and free of dust or oil for the strongest bond.
The 3M™ Dual Lock™ Reclosable Fastener SJ3540 represents a durable and secure fastening solution engineered to deliver exceptional holding power. This innovative product features interlocking mushroom-shaped heads with a stem density of 250 per square inch, which work together to provide tensile strength capabilities that exceed typical hook-and-loop fastening products by up to five times. The fastener incorporates a synthetic rubber-based black polyethylene foam tape foundation, protected by a removable film liner. Its pressure-sensitive adhesive formulation is specifically designed to achieve rapid initial tack and minimal dwell time, enabling efficient installation without the need for traditional tools such as drills, screws, or sewing implements.
Recommended Applications:
- Access panels
- Interior signage
- Decorative trim
- Office partitions
- Product identification labels
The 3M™ Dual Lock™ Reclosable Fastener SJ3540 utilizes interlocking mushroom-shaped heads that smoothly slide across one another, permitting precise positioning and alignment of components prior to final engagement. This unique fastening mechanism enables rapid product assembly while maintaining exceptional design adaptability. The reclosable fastener system demonstrates compatibility with varying stem densities, allowing users to customize strength levels and overall system performance based on specific application requirements.
When properly engaged, these fasteners produce an audible clicking sound that confirms secure closure and proper attachment. Disengagement is accomplished through simple hand-peeling of the connected pieces. The fastening system maintains consistent strength performance across multiple attachment and detachment cycles. As a lightweight alternative to traditional metal fastening hardware, this product remains concealed beneath surfaces and preserves material integrity while offering both aesthetic and functional design advantages.
Hundreds of Reattachments in a SnapWhen two 3M™ Dual Lock™ Reclosable Fastener components are brought together, the flexible stems allow the mushroom-shaped heads to slide past one another. Once the opposing fastener section passes, the stems automatically return to their original configuration, causing the mushroom heads to firmly interlock. This mechanism delivers substantial tensile strength while remaining fully removable through manual peeling or cleaving. The product is ideally suited for interior applications requiring robust, high-strength, and reusable fastening solutions.
Delivers Long-Lasting PerformanceMeeting diverse design requirements becomes simpler when utilizing 3M™ Dual Lock™ Reclosable Fasteners as your attachment solution. For applications demanding a strong, dependable, and removable fastening system, this product offers a practical alternative to conventional fastening methods including screws, nuts, and bolts, while significantly streamlining the assembly and disassembly process.
