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SKU 7000049435
Legacy SKU 70006651080
UPC 00051111187913
Catalog Number SJ3870
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)
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On it's way to you June 5  

Qty

Minimum Order 4 Rolls
Order Increment 4 Rolls
  Multiple Application Use
  Versatile
  Easy To Use
  Fantastic Price
Product Dimensions
Imperial Metric
Weight 2.14069 lbs
Width 18 in
Length 18 in
Height 1/2 in
Shipping Dimensions
Weight 9.46885 lb
Length 20.98425 in
Width 20.98425 in
Height 2.79528 in
Color Black

PRODUCT FAQ

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

    3M™ Dual Lock™ Reclosable Fastener SJ3870 is a black, high performance fastening system that offers easy and secure attachment. It consists of interlocking mushroom-shaped heads that can be attached to each other for excellent holding power.

  2. What are the dimensions of this product?

    The SJ3870 model comes in widths ranging from 1/2 inch up to four inches, with lengths from five yards up to 50 yards. This specific product has a width of half an inch and length of 45 yards.

  3. Is it easily removable without leaving any residue behind?

    Yes! Unlike adhesives which may leave behind sticky residue when removed, fasteners made by dual locks are widely known as non-permanent bonding products that typically do not leave adhesive mark or damage surfaces making it safe for almost all types of materials.

  4. How many pieces come in one case pack?

    Each case contains four rolls / pieces of reclosable fasteners helping you ensure easier access and availability when required.

  5. Where can I use this type of reclosable fastener?

    . There are various industrial applications where one can utilize this such as attaching trim panels on cars or airplanes; mounting solar panels outdoors etc; securing mirrors, paintings or decorative signs indoors ; keeping counter displays at office supply stores stable - generally in circumstances requiring moderate-to-high strength or vibration resistance bondings

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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