63.92 Kb

Application Profile

Market: Transportation

Account Type: Automotive Interior Trim Assembly





































Application Description

3MDual LockReclosable Fasteners SJ-3751 and SJ-3781 are used to attach the headliner to the roof on the interior of sport utility vehicles.

Key Application Requirements

Hold headliner in place, reclosable, meet interior component specifications.

Product Replaced

Conventional mechanical fasteners.

Benefits/Advantages To Customer

Variable strengths: Different stem densities provide different engagement and disengagement strengths to suit each application.

Easy to use: 3MDual LockReclosable Fasteners are are easy to align during assembly, helping to improve throughput and provide a good fit of the headliner.

Reliable bond: The aggressive high-tack, pressure-sensitive adhesive provides immediate application during assembly.

Improved appearance: 3MDual LockReclosable Fasteners are hidden from view, providing a clean, uncluttered look to the headliner.

Quiet: 3MDual LockReclosable Fasteners do not come loose, helping reduce squeaks.

Reclosable: 3MDual LockReclosable Fasteners allow easy access to wiring for service needs, helping to reduce service costs.

Die-cut parts: 3MDual LockReclosable Fasteners may be die-cut to shape and size to meet specified shapes.


3MDual LockReclosable

Fasteners SJ-3751, SJ-3781


North America


Attaching Headliner


3711 – Motor Vehicles

and Car Bodies

3714 – Motor Vehicle Parts

and Accessories

3M Bonding

Systems Division

Product Information

3MDual LockReclosable Fasteners consist of continuous strips of plastic backing, with plastic mushroom-shaped stems protruding up from the backing strip. When two pieces of the fasteners are pressed together, the mushroom heads interlock with an audible snap. To open, simply pull apart. This provides fast, secure, reclosable fastening performance for a wide range of applications. Cycle life exceeds 1,000 reclosures.

3MDual LockReclosable Fasteners are die-cut to specified size by a specialty converter and shipped to a Tier 1 supplier. The panel supplier applies 3MDual LockReclosable Fastener pieces to the headliner. The automotive manufacturer applies the mating 3MDual LockReclosable Fastener pieces to the appropriate location on the interior roof of the sport utility vehicle. The automotive manufacturer then attaches the headliner by snapping it in place.

Related Application Ideas

Attaching various automotive interior trim.

Qualified for Industry Specifications



General Motors

3MDualLock Reclosable Fastener

PF 8543




PF 8858



For Additional Information

Important Notice

Limitation of Remedies

and Liability

Bonding Systems Division

3M Center, Building 220-7E-01

St. Paul, MN 55144-1000

To request additional product information or to arrange for sales assistance, call 1-800-362-3550. Address correspondence to: 3M Bonding Systems Division, 3M Center, Building 220-7E-01, St. Paul, MN 55144-1000. Our fax number is 651-733-9175. In Canada, phone: 1-519-451-2500. In Puerto Rico, phone: 1-809-750-3000. In Mexico, phone: 52-5-270-2289.

3M MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user’s method of application. Please remember that many factors can affect the use and performance of a 3M Bonding Systems Division product in a particular application. The materials to be bonded with the product, the surface preparation of those materials, the product selected for use, the conditions in which the product is used, and the time and environmental conditions in which the product is expected to perform are among the many factors that can affect the use and performance of a 3M product. Given the variety of factors that can affect the use and performance of a 3M product, some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the user’s method of application.

If the 3M product is proved to be defective, THE EXCLUSIVE REMEDY, AT 3M’S OPTION, SHALL BE TO REFUND THE PURCHASE PRICE OF OR TO REPAIR OR REPLACE THE DEFECTIVE 3M PRODUCT. 3M shall not otherwise be liable for loss or damages, whether direct, indirect, special, incidental, or consequential, regardless of the legal theory asserted, including negligence, warranty, or strict liability.

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“Dual Lock” is a trademark of 3M.