3M™ Dual Lock™ Reclosable Fastener SJ3751 is a black, polypropylene reclosable fastener roll good with pressure-sensitive adhesive. This fastener is available in a number of widths and has a stem density of 400 stems per square inch.
- Interlocking mushroom shaped stems snap together for a strong, fast and easy attachment
- Can be opened and re-closed in high cycle applications
- Provides hidden component attachment, preventing disruption on the show surface
- Strong holding power reduces the rattling and vibration of components
- Resistant to high temperatures and solvents
- Does not require any special tools or processing equipment for installation
- Can be used to attach components before they enter the final assembly plant, helping to reduce the number of parts and assembly time.
- Audibly snaps together to form a secure, dependable and repeatable attachment
- Mates with other stem densities to achieve a variety of engagement and disengagement forces
|Width||1 in||25.4 mm|
|Length||50 yd||45.7 m|
What is 3M™ Dual Lock™ Reclosable Fastener SJ3751 and what makes it different from other fasteners?
The 3M™ Dual Lock™ Reclosable Fastener SJ3751 is a black, pressure sensitive adhesive-backed roll of reclosable fastener with a stem density of 400. It has interlocking mushroom-shaped stems that easily lock together to form an incredibly strong bond. What sets this product apart is its reusability, durability, and resistance to moisture, chemicals, UV rays and temperature fluctuations.
What are the dimensions of the roll good?
The Roll Good with PSA measures 1 inch in width by 50 yards in length which makes it suitable for big projects.
How many rolls come per case?
Each case contains eight (8) rolls of the Dual Lock Reclosable Fastener SJ3751 with PSA backing.
Can this be used outdoors?
Yes! This product can withstand exposure to sunlight (UV), extreme temperatures (-30°F/-34°C to +160°F/71°C), saltwater spray so it will not break down quickly or deteriorate when installed outdoor applications or humid environments
Is there any special way I need to handle/install this product?
A:The installation process for our dual-lock reclosing fasteners would require you cleaning your surface thoroughly before applying them because dirt may negatively affect adhesion strength. Also ensure surfaces are dry before affixing the tape because sticking wet things could reduce bonding strength over time
3M™ Dual Lock™ Reclosable Fastener SJ3751 overcomes the often difficult alignment and installation problems of screws and hidden fasteners, offering simple installation without requiring special tools for installation. 3M™ Dual Lock™ Reclosable Fasteners are positive-locking, blind fasteners designed for attaching automotive trim components. The products feature mushroom-shaped polyolefin stems that snap together, forming a high tensile closure. Dual Lock fasteners are used primarily to secure rigid and semi-rigid surfaces such as trim or door panels, instrument panel bezels, headliners, and other automotive interior and exterior trim.
How It Works
This reclosable fastener is designed to be attached to a variety of substrates using pressure-sensitive adhesive. The fastener can then be mated to a second Dual Lock fastener attached to a piece of trim or other part – when the two fasteners mate, the two parts are firmly secured together.
When two pieces of 3M™ Dual Lock™ Reclosable Fasteners are pressed together, 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.
Alignment and re-alignment are easy and no special tools are required for assembly. This means that they can be used to attach components before they enter the final assembly plant, helping to reduce the number of parts and assembly time.
Combinations of stem densities and the engaged area provide adjustable and proportional engagement and disengagement force. Dual Lock™ fasteners are offered in three different densities (stems per square inch): 170, 250, and 400. The Dual Lock fastener SJ3751 has 400 stems per square inch (25mm), offering the tightest hold, and can be mated to Type 170 or 250. It should not be mated with another Type 400 fastener because the engagement would be so tight that detachment would likely result in damage to the parts.
3M™ Dual Lock™ Reclosable Fasteners can replace conventional mechanical fasteners in a wide range of assembly and attachment applications where reclosability and serviceability is desired. Dual Lock fasteners are used primarily to secure rigid and semi-rigid surfaces such as trim or door panels, instrument panel bezels, headliners, and other automotive interior and exterior trim. Some examples of applications include:
- Vehicle headliners
- Attaching accessories and equipment
- Attaching window and door trim panels
- Vibration and sound damping control
- CHMSL cover plates
- Center console flanges
- Interior trim
- Sunroof rings
3M Science Delivers Closures You Can Count On
At 3M, we thrive on defying conventional wisdom, like the concept that fasteners can both durably attach and be easily separated. 3M™ Dual Lock™ Reclosable Fasteners are ideal for many applications where a high strength, reclosable fastening system is required. 3M engineers have uniquely combined physics and materials science to bring the automotive industry reliable fasteners that supply high performance even after exposure to high moisture levels and wide temperature ranges. For applications that require reclosability and serviceability, look no further than the long-lasting durability of the 3M™ Dual Lock™ Reclosable Fastener SJ3751. It is yet another outstanding example of how 3M technologies advance operations in the automotive industry, providing both ease of use and superior results.