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SKU 7000049437
Legacy SKU 70006651122
UPC 00051111187951
Product Number SJ3870

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.

  • 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 140°F (60°C)
  • Best suited for indoor and outdoor use
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On it's way to you April 17  

Qty

Minimum Order 1 Roll
Order Increment 1 Roll
  Multiple Application Use
  Versatile
  Easy To Use
  Fantastic Price
Product Dimensions
Imperial Metric
Width 2 in 50.8 mm
Length 45 yd 41.14 m
Shipping Dimensions
Weight 7.7162 lb
Length 21 in
Width 21 in
Height 2.8 in
Color Black

PRODUCT FAQ

  1. What is 3M™ Dual Lock™ Reclosable Fastener SJ3870?

    3M™ Dual Lock™ Reclosable Fastener SJ3870 is a black, 2 inch x 45 yard fastening system that uses interlocking mushroom-shaped heads to create a strong, secure bond that can be easily opened and closed.

  2. What type of applications would this product be useful for?

    This product is useful for a wide variety of indoor and outdoor applications where you need to attach or reposition materials. Examples include attaching display graphics, signs or panels, securing equipment during transit and so much more!

  3. How does the reclosability feature work?

    The reclosability feature works by using mushroom-shaped stems which snap together when two pieces are pressed against each other. These stems can then be pulled apart in the opposite direction with no residual adhesive left behind.

  4. How many pieces come per case?

    There is one piece per case of the 3M™ Dual Lock™ Reclosable Fastener SJ3870.

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.
Unlock Simplicity

Durable and secure, 3M™ Dual Lock™ Reclosable Fastener SJ3870 has exceptional strength through its interlocking mushroom-shaped heads (250 stem density per square inch), providing up to 5X the tensile strength of typical hook-and-loop products. 3M designed this fastener with a black, modified acrylic, very conformable foam tape protected by a removable, film liner. This solid, pressure sensitive foam tape features a strong, durable bond that is chemical and UV resistant. With 3M™ Dual Lock™ Reclosable Fastener SJ3870, there is no need for any drilling, screwing or sewing tools which makes for quick installation.

Recommended Applications:
  • Access panels
  • Graphic attachment
  • General industrial attachment
  • Small components

Design Flexibility

3M™ Dual Lock™ Reclosable Fastener SJ3870 consists of interlocking mushroom-shaped heads that easily slide over each other, allowing for positioning of parts before being snapped together. This fastening process creates a durable attachment and provides fast product assembly with great design flexibility. Reclosable fasteners can also engage with different stem densities for varying levels of strength and system performance.

3M™ Dual Lock™ Reclosable Fasteners sound an audible snap when secure, which verifies closure of the attachment. To disengage, simply peel the pieces apart by hand. These fasteners maintain their strength throughout multiple attachments and detachments. A lightweight alternative to metal fasteners, this product remains hidden beneath surfaces and does not interfere with the integrity of your material—providing aesthetic improvements and design flexibility.

Hundreds of Reattachments in a Snap

When two pieces of 3M™ Dual Lock™ Reclosable Fasteners mate, the stems flex and the mushroom heads slide past each other. After passing the opposing mating piece, the stems snap back into their original position and the opposing mushroom heads interlock. These fasteners can provide high tensile strength but can be opened by simply cleaving or peeling open the closure. This product is well suited for many indoor and outdoor applications where a high strength and versatile reclosable fastening system is required.

Delivers Long-Lasting Performance

Not all design requirements are easily satisfied, but you can simplify your attachments. When you need a strong, reliable, yet removable closure, 3M™ Dual Lock™ Reclosable Fasteners are the easy alternative to traditional fastening methods such as screws, nuts or bolts.

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