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Product Features
• 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-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 220deg F (104deg C), though temperature resistance may change based on adhesive used
• Suited for indoor or outdoor use
Description
Dual Lock™, 7000001979, Fastener, Reclosable, Series: SJ3440, 50 yd Length, 1 in Width, 1 in THK Engaged, Black, Polyolefin Backing, 200 deg F Maximum Operating, 25 Stem Density
3M™ Dual Lock™ Reclosable Fastener SJ3440 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 black fastener is most commonly attached by applying hot melt, epoxy or liquid adhesive.