Black, interlocking mushroom-shaped heads (400 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times
Mates with Type 170 or Type 250 stem densities to provide different strength combinations
Non-adhesive back 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
3M™ Dual Lock™ Reclosable Fastener SJ3441 is a black, plain backed, no adhesive fastener. 3M™ Dual Lock™ Reclosable Fastener SJ3441 has 400 stems per square inch with an engaged thickness of 0.16 inches.
Open and close fasteners hundreds of times
An audible snap announces that the fastener is engaged
Resists high temperatures, solvents and contamination
