3M™ Dual Lock™ Reclosable Fastener SJ3550CF, Black, 1 in x 5 yd, Sample

3M™ Dual Lock™ Reclosable Fastener SJ3550CF 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 bonds to a variety of substrates including metals, glass and plastics such as acrylics, polycarbonate and ABS. This fastener gives the adhesive a black appearance.
Special Price $61.17 Regular Price $71.96
UPC 00051131184701
3M ID 7100220689
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Unlock Simplicity

Durable and secure, 3M™ Dual Lock™ Reclosable Fastener SJ3550CF 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. This fastener was designed with a clear, acrylic, tape protected by a removable, film liner. This solid, pressure sensitive tape features a strong, durable bond that is heat, chemical and UV resistant. With 3M™ Dual Lock™ Reclosable Fastener SJ3550CF, there is no need for any drilling, screwing or sewing tools which makes for quick installation.

Recommended Applications:

Access panels Graphic attachment Specialty vehicles (interior attachments)

General industrial attachment

Design Flexibility

3M™ Dual Lock™ Reclosable Fastener SJ3550CF 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. This reclosable fastener 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.


  • 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
  • Clear, acrylic, tape bonds well to a variety of substrates including metals, glass 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 220°F (104°C)
  • Best suited for indoor and outdoor use
More Information
3M ID 7100220689
Keywords 3M, Dual Lock, Reclosable Fasteners, Fastener SJ3550CF, alternative to screws, acrylic tape, interlocking mushroom heads, high tensile strength, strong durable bond, black fastener, pressure-sensitive tape, indoor use, outdoor use, temperature resistance, UV resistant, chemical resistant, no drilling, no screwing, easy installation, access panels, graphic attachment, specialty vehicles, industrial attachment, design flexibility, multiple attachments, audible snap, secure fastening, lightweight fastener, hidden fastener, aesthetic appearance, metal bonding, glass bonding, plastic bonding, automotive, commercial solutions, electronics, manufacturing, transportation, aerospace, assembly, building maintenance, repair, commercial vehicles, DIY, government, signage, marine, metalworking, recreational vehicles, woodworking.
Global Product Hierarchy Tapes > Reclosable Fasteners > Mushroom Hook Fasteners
Adhesive Color Transparent
Color Family Black
Product Color Black
Product Number SJ3550CF
Product Type simple
Quantity 0
Trademark 1 3M™
Trademark 2 Dual Lock™
Country of Origin United States
Sales Unit RO
SAP Shelf Life In Days 0
Base - Billing Unit ROL
Base - Customary Height Dimension 1.299212598
Base - Customary Length Dimension 10.7480315
Base - Customary Width Dimension 8.74015748
Base - Metric Gross Weight 249.5 G
Base - Metric Height Dimension 3.3 CM
Base - Metric Length Dimension 27.3 CM
Base - Metric Width Dimension 22.2 CM
Base - Item Quantity 1
Base - Unit ROL
Consumer - Billing Unit ROL
Consumer - Customary Cubic Dimension 122.04736614197638 ci
Consumer - Customary Gross Weight 0.5500533441512696 lbs
Consumer - Customary Net Weight 0.5500533441512696 lbs
Consumer - Customary Height Dimension 1.2992125984251968 in
Consumer - Customary Length Dimension 10.748031496062993 in
Consumer - Customary Width Dimension 8.740157480314961 in
Consumer - Metric Cubic Dimension 1999.998 CCM
Consumer - Metric Net Weight 249.5 G
Consumer - Metric Height Dimension 3.3 CM
Consumer - Metric Length Dimension 27.3 CM
Consumer - Metric Width Dimension 22.2 CM
Consumer - Item Quantity 1
Consumer - Total Unit Quantity 1
Consumer - Previous Packaging Level Quantity 1
Consumer - Item Unit RLS
Consumer - Unit ROL
Shipper - Total Unit Quantity 1
Shipper - Previous Packaging Level Quantity 1
Pallet - Total Unit Quantity 999
Pallet - Previous Packaging Level Unit LOOS
Pallet - Pallet Layer Quantity 1
Pallet - Shipping Container Per Layer Quantity 999
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