Login
Our website has been updated as of Dec 8, 2025.
If you are unable to login with your password,
please try the Reset Password link.
If Reset Password does not respond with the a Password Reset message, please re-register your account.
Register
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
• Black, modified acrylic, very conformable foam tape bonds well to a variety of substrates including metals, powder-coated paints and plastics such as acrylics, polycarbonate and ABS
• 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 140deg F (60deg C)
• Best suited for indoor and outdoor use
Description
Dual Lock™, 7000049436, Fastener, Reclosable, Series: SJ3870, 45 yd Length, 1 in Width, 5 mil THK Engaged, Black, Modified Acrylic Adhesive, 180 deg F Maximum Operating, 250 Stem Density
3M™ Dual Lock™ Reclosable Fastener SJ3870 is the convenient 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) that bonds to a variety of substrates including metals, powder-coated paints and plastics such as acrylics, polycarbonate and ABS.