Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
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SKU 7100023047
Legacy SKU 70006718574
UPC 00051111976333
Product Number TB3870

The 3M™ Dual Lock™ Reclosable Fastener TB3870 has a modified acrylic pressure sensitive adhesive on the back of a black polypropylene reclosable fastener with 250 stems per square inch. This product can be used both indoors and outside in a variety of applications; and has a slim 0.24 inch engaged thickness and long service life.

  • Reclosable system is up to five times stronger in tensile strength than hook-and-loop fasteners
  • Snap-in-place installation replaces screws, nails, snaps and rivets
  • Black fastener is hidden when closed and provides clean, smooth appearance
  • Modified acrylic adhesive bonds well with many plastics, powder coated paints and medium to low surface energy materials
  • Type 250 stem density polyolefin fastener mates to Type 170, 250 or 400, increasing fastening options
  • Ideal for indoor and outdoor use to attach doors, flexible solar panels, headliners, access panels, signs and display components
Estimated date of shipment March 30  


Minimum Order 8 Bags
Order Increment 8 Bags
Product Dimensions
Imperial Metric
Weight 0.86 LBS
Width 1 in 25.4 mm
Length 10 ft 3.05 m
Shipping Dimensions
Weight 6.88 lb
Length 15.125 in
Width 15.125 in
Height 7.125 in
Color Black
Brochures, Catalogs & Data Sheets
  • Pdf   Catalogs_3m recloslable fasten
For industrial/occupational use only. Not for consumer sale or use.
3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.
The remarkable 3M™ Dual Lock™ Reclosable Fastener TB3870 can be opened and closed over and over, up to 1,000 times before losing 50% of the original strength for repeated access or repositioning. The mushroom heads easily slide over each other allowing positioning of parts before they are snapped together to create a firm fastening attachment. When mated, the black fasteners are hidden from view and leave you with an unbroken surface to help create a smooth, clean appearance. The type 250 stem density polyolefin fastener mates to Type 170, 250 or 400 giving the user the option of different closure strength depending upon application.


Flexible solar panels
Access panels
Display components

The fastener is backed with a modified acrylic pressure sensitive adhesive that bonds to many plastics and powder coated paints; as well as medium to low surface energy materials with little or no surface preparation.

Hear the Snap
"Snap!" it's the one word that best defines the extensive line of 3M™ Dual Lock™ products. Here's how it works: When two pieces of 3M Dual Lock Reclosable Fastener are pressed together, the stems flex and the mushroom heads slide past each other. After passing the mushroom heads on the opposing mating piece, a stem snaps up into its original position, interlocking with the opposing heads. Listen for the audible snap to signal that the fastener is engaged. The attachment formed may be as effective as screws or rivets, but will peel apart for repositioning. 3M Dual Lock Reclosable Fasteners are used extensively in transportation, electronics, business equipment, machinery, medical and sign and display markets.

Lose the Screws
The bond is strong but can easily be detached; just pull apart to disengage and reattach as needed. This means that this product gives you a strong, hidden bond with the convenience of multiple openings and closings so you can lose the screws, rivets, hooks, bolts, zippers and other unsightly attachment methods. In short – this product is an aesthetically pleasing fastener that doesn't sacrifice attachment strength; in fact, the 3M™ Dual Lock™ Reclosable Fastener TB3870 is about five times stronger in tensile strength than 3M™ Hook and Loop fasteners used in comparable applications. In many cases, this attachment method also saves the user money with less material used. Additionally, there's no need to drill holes that might weaken the part or substrate, and no tools required to assemble and remove the part.

You expect more options to secure, attach and connect surfaces. 3M Dual Lock Reclosable Fasteners offer quick installation and high-strength attachment, yet can be opened as easily as zippers. That functional flexibility, as well as superior aesthetics, reduced weight, and savings in labor and installation costs, make innovative 3M fasteners a popular and effective solution.   Add to cart