3M™ Dual Lock™ Reclosable Fastener SJ3445 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. This fastener is most commonly attached by applying hot melt, epoxy or liquid adhesive.
- 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
- Non-woven backing allows for attachment with hot melt, epoxy or liquid adhesives
- 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 220°F (104°C), though temperature resistance may change based on adhesive used
- Suited for indoor or outdoor use
|Width||1 in||25.4 mm|
|Length||50 yd||45.72 m|
What is the purpose of 3M™ Dual Lock™ Reclosable Fastener SJ3445?
The primary purpose of this product is to provide a convenient and reliable reclosable fastening system for various applications.
What makes 3M™ Dual Lock™ Reclosable Fastener SJ3445 different from other types of fasteners?
This type of fastener uses hundreds and even thousands of mushroom-shaped stems that interlock with one another, creating a strong bond when pulled in opposite directions.
Is the black color just an aesthetic feature or does it bear any significance to its function?
The black color actually has significant implications. It helps hide the attachment points making them visually unobtrusive. It also minimizes light reflectance, avoiding glare issues in environments where lighting conditions are important.
How much can I expect to get from each roll that comes in each case?
Each roll contains 1 inch x 50 yards long strips which means you'll have enough material to tack or sew on approximately ten pieces measuring up to about twelve square inches.
:What materials will it work with best?
:This particular product works great with lightweight metals, glass, plastics as well as wood finishes such as matte paint or painted birch plywood surface plus some paints too!
Durable and secure, 3M™ Dual Lock™ Reclosable Fastener SJ3445 has exceptional strength through its interlocking mushroom-shaped heads (250 stem density per square inch), providing up to 5X the tensile strength of typical hook-and-loop products. With 3M™ Dual Lock™ Reclosable Fastener SJ3445, there is no need for any drilling or screwing.Recommended Applications:
- Alternative to pressure sensitive adhesives
3M™ Dual Lock™ Reclosable Fastener SJ3445 consists of interlocking mushroom-shaped heads that easily slide over each other, allowing for positioning of parts before being snapped together. This fastening process creates a durable attachment and provides fast product assembly with great design flexibility. Reclosable fasteners can also engage with different stem densities for varying levels of strength and system performance.
3M™ Dual Lock™ Reclosable Fasteners sound an audible snap when secure, which verifies closure of the attachment. To disengage, simply peel the pieces apart by hand. These fasteners maintain their strength throughout multiple attachments and detachments. A lightweight alternative to metal fasteners, this product remains hidden beneath surfaces and does not interfere with the integrity of your material—providing aesthetic improvements and design flexibility.Hundreds of Reattachments in a Snap
When two pieces of 3M™ Dual Lock™ Reclosable Fasteners mate, the stems flex and the mushroom heads slide past each other. After passing the opposing mating piece, the stems snap back into their original position and the opposing mushroom heads interlock. These fasteners can provide high tensile strength but can be opened by simply cleaving or peeling open the closure. This product is well suited for many indoor applications where a good performance, high strength, reclosable fastening system is required.Delivers Long-Lasting Performance
Not all design requirements are easily satisfied, but you can simplify your attachments. When you need a strong, reliable, yet removable closure, 3M™ Dual Lock™ Reclosable Fasteners are the easy alternative to traditional fastening methods such as screws, nuts or bolts.