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United Kingdom
All 3M Products
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)

94 Products

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Industries

Automotive (91)
Transportation (34)
Manufacturing (18)
Design & Construction (17)
Electronics (17)
Energy (13)
Commercial Solutions (8)
Communications (5)

Product Form

Roll (18)
Piece Part (1)

Backing (Carrier) Material

Polypropylene (9)
Polyolefin (5)

Adhesive Type

Clear Acrylic Adhesive (4)
PSA (3)
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)
General Purpose Acrylic Adhesive (1)

Overall Width (Imperial)

1 in (9)
0.75 in (5)
1.97 in (3)
0.98 in (3)
0.984 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 (11)
25.4 mm (11)
19 mm (4)
50 mm (3)
12.5 mm (2)
12.7 mm (1)
15.87 mm (1)
19.05 mm (1)
101.6 mm (1)
20.57 mm (1)

Product Colour

Black (14)
Transparent (6)

3M™ Dual Lock™ Reclosable Fastener SJ3278

3M™ Dual Lock™ Reclosable Fastener SJ3705, Pop-In Piece Part, Stem Density 250, Black, 20 mm x 20 mm

3M Stock

B40068989

3M™ Dual Lock™ Reclosable Fastener SJ3209, Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069019

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

3M™ Dual Lock™ Reclosable Fastener SJ3870

Options available

3M™ Dual Lock™ Reclosable Fastener SJ3540

Options available

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

3M Stock

B40068918

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

3M Stock

B40068910

3M™ Dual Lock™ Reclosable Fastener SJ3793, Slide-In Piece Part, Stem Density 250, Black

3M Stock

B40069016

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

3M Stock

B40069060

3M Dual Lock Reclosable Fastener Parts with Functional Bases

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

3M Stock

B40069066

3M™ Dual Lock™ Reclosable Fastener SJ3731

3M™ Dual Lock™ Reclosable Fastener SJ3220, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40068999

3M™ Dual Lock™ Reclose Fastnr SJ3871 400 Black, 1inx45yd 0.22in

3M™ Dual Lock™ Reclosable Fastener SJ3871

Options available

3M™ Dual Lock™ Reclosable Fastener SJ3541

Options available

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™ Reclos Fast SJ3222 Pop-In 250

3M™ Dual Lock™ Reclosable Fastener SJ3810, Pop-In Piece Part, Stem Density 250, Black, 26 mm x 26 mm

3M Stock

B40068995

3M™ Dual Lock™ Reclosable Fastener SJ3754, Roll Good without Pressure Sensitive Adhesive, Stem Density 170, Black

3M Stock

B40068904

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 SJ3731, Pop-In Piece Part, Stem Density 400, Black, 20 mm x 20 mm

3M Stock

B40069017

3M™ Dual Lock™ Reclosable Fastener SJ3222, Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069033

3M™ Dual Lock™ Reclos Fast SJ3267 Pop-In 250 26mmx26mm

3M™ Dual Lock™ Reclosable Fastener SJ3264, Pop-In Piece Part, Stem Density 250, Black

3M Stock

B40069015

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 SJ3756, Roll Good with Pressure Sensitive Adhesive, Stem Density 170, Black

3M Stock

B40068919

3M™ Dual Lock™ Reclosable Fastener SJ3228, Slide-In Piece Part, Stem Density 400, Black

3M Stock

B40069011

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 SJ3748, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40068992

3M™ Dual Lock™ Reclosable Fastener SJ3267, Pop-In Piece Part, Stem Density 250, Black, 26 mm x 26 mm

3M Stock

B40069021

3M™ Dual Lock™ Reclosable Fastener SJ3252, Die-Cut Piece Part, Stem Density 400, Black

3M Stock

B40069008

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

3M Stock

B40068936

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 SJ3752, Roll Good with Pressure Sensitive Adhesive, Stem Density 170, Black

3M Stock

B40068888

3M™ Dual Lock™ Reclosable Fastener SJ3227, Slide-In Piece Part, Stem Density 250, Black

3M Stock

B40069023

3M™ Dual Lock™ Reclosable Fastener SJ3743, Pop-In Piece Part, Stem Density 170, Black

3M Stock

B40069064

3M™ Dual Lock™ Reclosable Fastener SJ3226, Pop-In Piece Part, Stem Density 170, Black

3M Stock

B40068993

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

3M Stock

B40068987

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

3M Stock

B40068924

UPC

00021200462757

Alternative ID

SJ4580

3M™ Dual Lock™ Reclosable Fastener SJ3551CF

Options available

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™ Reclosable Fastener Low Profile SJ4570

Options available

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

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

3M Stock

B40068946

3M™ Dual Lock™ Reclosable Fastener SJ3803, Slide-In Piece Part, Stem Density 250, Black

3M Stock

B40069048

3M™ Dual Lock™ Reclosable Fastener SJ3806

3M™ Dual Lock™ Reclosable Fastener SJ3827, Pop-In Piece Part, Stem Density 400, Black

3M Stock

B40069014

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

3M Stock

B40069025

3M™ Dual Lock™ Reclosable Fastener SJ3221, Pop-In Piece Part, Stem Density 250, Black, 20 mm x 20 mm

3M Stock

B40068986

3M™ Dual Lock™ Reclosable Fastener SJ3542, Black, 25 mm x 45.7 m, 5.7 mm

3M Stock

B40068909

UPC

04054596272248

Alternative ID

SJ3542

3M™ Dual Lock™ Reclosable Fastener SJ3440, Black, 1 in x 50 yd

3M™ Dual Lock™ Reclosable Fastener SJ3440, Black, 25 mm x 45.7 m, 4.1 mm

3M Stock

B40068931

UPC

00021200658082

Alternative ID

SJ3440

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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

94 Products