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Tapes
Reclosable Fasteners
Mushroom Hook Fasteners

3M Mushroom Hook Fasteners

3M™ Dual Lock™ Reclosable Fasteners

Looking for a reclosable fastener with super strength, ultimate ease and durable enough to last through repeated opening and closing?

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Interlocking mushroom-shaped heads have five times the tensile strength of hook and loop products.

Looking for a reclosable fastener? When you need a strong, reliable attachment that also opens and recloses, look no further than 3M™ Dual Lock™ Reclosable Fasteners. Interlocking mushroom-shaped heads have five times the tensile strength of hook and loop products.

3M™ Reclosable Fasteners are the easy alternative to traditional fastening methods such as screws, nuts or bolts. Super strength. Ultimate ease. Durable enough to last through repeated opening and closing.

Different combinations within the 3M™ Dual Lock™ Reclosable Fastener family let you find the right strength for your application. 3M™ Dual Lock™ Reclosable Fasteners have mushroom-shaped heads in three different densities
- Type 170 (26 heads per square cm)
- Type 250 (39 heads per square cm)
- Type 400 (62 heads per square cm)

The Fast and Flexible Attachment Solution

Easy to Apply: Just peel off the protective liner from each mated piece of 3M™ Dual Lock™, attach them to your separate pieces (using a roller to ensure good adhesion) and then push the pieces together until you feel the mushroom-shaped heads interlock. Alternate method: Peel the protective liner from one side and attach the mated strip to one surface using a roller to ensure good adhesion, then peel the other liner to expose the adhesive and attach your second surface, pressing down to ensure good adhesion; the pieces can then be peeled apart for access.

Easy to Maintain: Just detach the pieces for easy cleaning and maintenance – fastener can be sprayed out with water or air to remove dirt or debris.

Easy to Replace: To change a sign or replace a panel, remove the original sign or panel and apply a new strip of either 3M™ Dual Lock™ to the new piece as described above, then push the pieces together.

Different combinations result in different holding strengths

Strong: 170:250
Stronger: 250:250 or 170:400
Strongest: 250:400

We advise against mating 400:400 because the density makes it difficult to engage and disengage effectively. For 170:170 the head pattern may not match up well to engage the heads properly.

For thinner applications, see our low profile products including: SJ4570 (clear, indoor use), SJ4575 (black) and SJ4580 (clear, indoor/outdoor use).

Type 170
INDOOR APPLICATIONS

SJ3542 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints, Polypropylene

INDOOR AND OUTDOOR APPLICATIONS

SJ3552CF (Black)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3562 (Clear)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3872 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints
Type 250
INDOOR APPLICATIONS

SJ3540 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints, Polypropylene

INDOOR AND OUTDOOR APPLICATIONS

SJ3550CF (Black)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3560 (Clear)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3870 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints
Type 400
INDOOR APPLICATIONS

SJ3541 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints, Polypropylene

INDOOR AND OUTDOOR APPLICATIONS

SJ3551CF (Black)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3561 (Clear)
Suitable for: Aluminium, Stainless Steel, Glass, Acrylic, PC, ABS

SJ3871 (Black)
Suitable for: Aluminium, Stainless Steel, Acrylic, PC, ABS, Powder Coated Paints

Resources

3M™ Dual Lock™ Brochure

Brochure (PDF, 945 KB)
Designing with 3M™ Dual Lock™

White Paper (PDF, 628 KB)
3M™ Dual Lock™ Design Guide for Rail & Bus

Brochure (PDF, 11.44 MB)
Attachment Solutions for Partitioning

Flyer (PDF, 175 KB)
Webinar: how to bond Metal, Foam & Fabrics, Composites, Glass & Wood

Webinar
Automation of 3M™ Dual Lock™ Visit our 360° virtual Lab Tour

Link
Bonding & Assembly

More about various substrates and watch testimonial videos
Bonding Solutions Brochure

Explore the industrial adhesives and tapes bonding portfolio
View (PDF, 5.6 MB)

112 Products

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Industries

Automotive (109)
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Design & Construction (16)
Electronics (16)
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Commercial Solutions (8)
Communications (4)

Product Form

Roll (16)
Piece Part (1)

Backing (Carrier) Material

Polypropylene (8)
Polyolefin (5)

Adhesive Type

PSA (5)
Clear Acrylic Adhesive (4)
Acrylic (2)
Modified Acrylic (2)
Non-Adhesive (2)
Low Surface Energy Acrylic Adhesive 300LSE (2)
Low Surface Energy Acrylic Adhesive (1)
Synthetic Rubber (1)
High Temperature Acrylic (1)

Overall Width (Imperial)

1 in (7)
0.75 in (5)
0.984 in (5)
1.97 in (3)
0.98 in (3)
4 in (1)
0.5 in (1)
2 in (1)
0.49 in (1)
0.81 in (1)

Overall Width (Metric)

25 mm (12)
25.4 mm (9)
19 mm (4)
50 mm (3)
12.5 mm (1)
12.7 mm (1)
15.87 mm (1)
19.05 mm (1)
101.6 mm (1)
20.57 mm (1)

Product Colour

Black (15)
Transparent (6)

3M™ Dual Lock™ Reclosable Fasteners SJ3550CF

Options available

3M™ Dual Lock™ Reclosable Fastener SJ3551CF

Options available

3M™ Dual Lock™ Reclosable Fastener DL400/4225, Roll Good with Pressure Sensitive Adhesive, Stem Density 400, Black

3M™ Dual Lock™ Reclosable Fastener DL400/5361 Stem Density 400, Black, 25 mm x 45.7 m

3M Stock

B40068934

UPC

04064035047733

3M™ Dual Lock™ Reclos Fast SJ3766 Rigid Back 400 1inx1yd

3M™ Dual Lock™ Reclosable Fastener SJ3766, Roll Good with Rigid Back, Stem Density 400, Black

3M Stock

B40068906

3M™ Dual Lock™ Reclosable Fastener SJ3781

3M™ Dual Lock™ Reclosable Fastener SJ3758, Roll Good with Pressure Sensitive Adhesive, Stem Density 250, Black

3M Stock

B40068955

3M™ Dual Lock™ Reclosable Fastener SJ3271, Slide-In Piece Part, Stem Density 400, Black

3M Stock

B40068957

3M™ Dual Lock™ Reclosable Fastener SJ3749, Pop-In Piece Part, Stem Density 400, Black, 1 in x 1 in, 5000 pieces per case

3M™ Dual Lock™ Reclosable Fastener SJ3807, Ultimate Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40069046

3M™ Dual Lock™ Reclosable Fastener SJ3806

3M™ Dual Lock™ Reclosable Fastener SJ3713, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40069025

3M™ Dual Lock™ Reclos Fast SJ3268 Pop-In 400 26mmx26mm

3M™ Dual Lock™ Reclosable Fastener SJ3268, Pop-In Piece Part, Stem Density 400, Black, 26 mm x 26 mm

3M Stock

B40068984

3M Dual Lock Reclosable Fastener SJ3463 Round Piece Part 400

3M™ Dual Lock™ Reclosable Fastener SJ3263, Die-Cut Piece Part, Stem Density 250, Black

3M Stock

B40069020

3M™ Dual Lock™ Reclosable Fastener SJ4580, Transparent 102 mm x 45.7 m, 2.8 mm

3M Stock

B40068924

UPC

00021200462757

3M™ Dual Lock™ Reclosable Fastener DL400/5428, Roll Good with Pressure Sensitive Adhesive, Stem Density 400, Black

3M™ Dual Lock™ Reclosable Fastener DL400/GT6008, Stem Density 400, Black, 25 mm x 45.7 m

3M Stock

B40068944

3M Dual Lock Reclosable Fastener White 170 Stems Per Inch

3M™ Dual Lock™ Reclosable Fastener SJ3272, Pop-In Piece Part, Stem Density 170, White Base with Clear Stems, 26 mm x 26 mm

3M Stock

B40069040

3M™ Dual Lock™ Reclos Fast SJ3768 Rigid Back 250 1inx1yd

3M™ Dual Lock™ Reclosable Fastener SJ3768, Roll Good with Rigid Back, Stem Density 250, Black

3M Stock

B40068912

3M™ Dual Lock™ Reclosable Fastener SJ3781

3M Stock

B40068908

3M™ Dual Lock™ Reclosable Fastener SJ3267

3M™ Dual Lock™ Reclosable Fastener SJ3808, Ultimate Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069039

3M™ Dual Lock™ Reclos Fast SJ3700 Slide-In 170 20mmx20mm

3M™ Dual Lock™ Reclosable Fastener SJ3700, Slide-In Piece Part, Stem Density 170, Black

3M Stock

B40069024

3M Dual Lock Reclosable Fastener Parts with Functional Bases

3M™ Dual Lock™ Reclosable Fastener SJ3277, Pop-In Piece Part, Stem Density 170, Black, 26 mm x 26 mm

3M Stock

B40069004

3M™ Dual Lock™ Reclosable Fastener SJ3715, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40069049

3M™ Dual Lock™ Reclosable Fastener SJ3755, Die-Cut Piece Part, Stem Density 250, Black

3M Stock

B40068981

3M™ Dual Lock™ Reclosable Fastener DL400/5428, Roll Good with Pressure Sensitive Adhesive, Stem Density 400, Black

3M Stock

B40068936

3M Dual Lock Reclosable Fastener White 250 Stems Per Inch

3M™ Dual Lock™ Reclosable Fastener SJ3273, Pop-In Piece Part, Stem Density 250, White Base with Clear Stems, 26 mm x 26 mm

3M Stock

B40069035

3M™ Dual Lock™ Reclos Fast SJ3780 Press Sen Adh 250 1inx1yd

3M™ Dual Lock™ Reclosable Fastener SJ3780, Roll Good without Pressure Sensitive Adhesive, Stem Density 250, Black

3M Stock

B40072058

3M™ Dual Lock™ Reclosable Fastener SJ3785, Roll Good with Pressure Sensitive Adhesive, Stem Density 400, Black

3M Stock

B40068886

3M™ Dual Lock™ Reclosable Fastener SJ3714, Slide-In Piece Part, Stem Density 400, Black

3M Stock

B40069013

3M™ Dual Lock™ Reclosable Fastener SJ3825, Pop-In Piece Part, Stem Density 170, Black

3M Stock

B40069051

3M™ Dual Lock™ Reclosable Fastener SJ3826

3M™ Dual Lock™ Reclosable Fastener SJ3719, Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069050

3M™ Dual Lock™ Reclosable Fastener SJ3278, Pop-In Piece Part, Stem Density 250, Black, 26 mm x 26 mm

3M Stock

B40069018

3M™ Dual Lock™ Reclosable Fastener SJ3762, Die-Cut Piece Part, Stem Density 400, Black

3M Stock

B40068979

3M™ Dual Lock™ Reclosable Fastener SJ3552CF

Options available

3M™ Dual Lock™ Reclos Fast SJ3799 Rigid Back 170 1inx1yd

3M™ Dual Lock™ Reclosable Fastener SJ3799, Roll Good with Rigid Back, Stem Density 170, Black

3M Stock

B40068892

3M™ Dual Lock™ Reclos Fast SJ3787 Sen Adh 250

3M™ Dual Lock™ Reclosable Fastener SJ3787, Roll Good with Pressure Sensitive Adhesive, Stem Density 250, Black

3M Stock

B40068968

3M™ Dual Lock™ Reclosable Fastener SJ3717, Slide-In Piece Part, Stem Density 400, Black

3M Stock

B40069036

3M™ Dual Lock™ Reclosable Fastener SJ3826, Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069060

3M™ Dual Lock™ Reclosable Fastener SJ3731, Pop-In Piece Part, Stem Density 400, Black, 20 mm x 20 mm

3M Stock

B40069017

3M™ Dual Lock™ Reclosable Fastener SJ3279, Pop-In Piece Part, Stem Density 400, Black, 26 mm x 26 mm

3M Stock

B40069009

3M™ Dual Lock™ Reclosable Fastener SJ3763, Die-Cut Piece Part, Stem Density 400, Black

3M Stock

B40072178

3M™ Dual Lock™ Reclosable Fastener DL250/PX5011, 50 mm x 47.5 m, PN35469

3M™ Dual Lock™ Reclosable Fastener DL250/GT6012F, Roll Good with Pressure Sensitive Adhesive, Stem Density 250, Black

3M Stock

B40068967

3M™ Dual Lock™ Reclosable Fastener DL400/5745, Stem Density 400, Roll Goods with Pressure Sensitive Adhesive, Die-Cut Par...

3M Stock

B40068929

3M™ Dual Lock™ Reclosable Fastener SJ3742, Roll Good without Pressure Sensitive Adhesive, Stem Density 170, Black

3M Stock

B40068910

3M™ Dual Lock™ Reclos Fast SJ3751 Sen Adh 400 1inx1yd

3M™ Dual Lock™ Reclosable Fastener SJ3751, Roll Good with Pressure Sensitive Adhesive, Stem Density 400, Black

3M Stock

B40068891

3M™ Dual Lock™ Reclosable Fastener SJ3229, Slide-In Piece Part, Stem Density 250, Black

3M Stock

B40069007

3M™ Dual Lock™ Reclosable Fastener SJ3706, Pop-In Piece Part, Stem Density 170, Black

3M Stock

B40069066

3M™ Dual Lock™ Reclosable Fastener SJ3804, Ultimate Pop-In Piece Part, Stem Density 170, Black

3M Stock

B40068997

3M™ Dual Lock™ Reclosable Fastener SJ3224, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40069054

3M™ Dual Lock™ Reclosable Fastener SJ3251, Die-Cut Piece Part, Stem Density 250, Black

3M Stock

B40068987

3M™ Dual Lock™ Reclos Fast SJ3753 Press Sen Adh 400 1inx1yd

3M™ Dual Lock™ Reclosable Fastener DL400/468MP, Roll Good with Adhesive Transfer Tape, Stem Density 400, Black

3M Stock

B40068970

3M™ Dual Lock™ Reclosable Fastener SJ5673, Stem Density 400, 10mm x 20mm

3M Stock

B40068916

3M™ Dual Lock™ Reclosable Fastener SJ3753, Roll Good without Pressure Sensitive Adhesive, Stem Density 400, Black

3M Stock

B40068946

3M™ Dual Lock™ Reclosable Fastener SJ3752, Roll Good with Pressure Sensitive Adhesive, Stem Density 170, Black

3M Stock

B40068888

3M™ Dual Lock™ Reclosable Fastener SJ3248, Slide-In Piece Part, Stem Density 250, Black

3M Stock

B40068998

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3M Mushroom Hook Fasteners

Interlocking mushroom-shaped heads have five times the tensile strength of hook and loop products.

The Fast and Flexible Attachment Solution

Different combinations result in different holding strengths

112 Products