Dual Lock Fastener with Acrylic Adhesive SJ3742/5408 Die Cut Adhesive Sticker Waterproof for Auto Parts 170 Type

3M SJ3742/5408 is a heavy-duty Dual Lock reclosable fastener with a mushroom-shaped interlocking design, delivering strong, reliable, and reusable attachment without screws or bolts.

Featuring 170 stems per square inch, it offers excellent shear strength and vibration resistance, ideal for automotive, electronics, and general industrial applications. It can be installed via sewing, stapling, or liquid adhesive, and maintains performance through repeated opening and closing. The hidden fastening system provides a clean, finished appearance with no rattle or squeak.