3M™ Dual Lock™ Reclosable Fastener SJ3229 is a black, polypropylene reclosable fastener with a 25.4 mm x 25.4 mm, rectangular base with extended edges that slide into a channel of precise dimension. It is lined with polyolefin mushroom stems of density 250 per 25mm², and can be paired with other stem densities for varying levels of strength.
- Interlocking mushroom-shaped stems snap together to form a strong, fast and easy attachment
- Extended edges on two sides easily attach to formed or molded retaining bracket
- 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
- Audibly snaps together for 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|
What is 3M™ Dual Lock™ Reclosable Fastener SJ3229?
3M™ Dual Lock™ Reclosable Fastener SJ3229, Slide-in Piece Part, Stem Density 250, Black is a unique fastening solution that offers great strength and durability with up to five times the tensile strength of typical hook-and-loop fasteners.
What are the dimensions and specifications of this product?
This product has dimensions of 25.4 mm x 25.4 mm with a stem density of 250 stems/square inch (39 stems/cm²). It comes in black color and one case contains approximately 5000 pieces.
How does it work?
The dual lock technology used in this product creates interlocking mushroom-shaped heads that provide dependable attachment when pressed together. This enables frequent opening and closing without losing holding power or becoming damaged.
What are some applications for this product?
There are various areas where SJ3229 can be applied including electronics, automotive interiors/ exteriors , general industrial & construction . Additionally, its tamper-resistant design makes it ideal for panels access doors as well as cabinet/housing closures etc.
Designed to Hold
3M™ Dual Lock™ Reclosable Fastener SJ3229 is a black, polypropylene reclosable fastener with a 25.4 mm x 25.4 mm, slide-in, rectangular base with extended edges and has a stem density of 250 stems per square inch. This product overcomes the often difficult alignment and installation problems of screws and hidden fasteners, offering simple installation with no additional tools required. 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.
These fasteners attach without the use of pressure sensitive adhesive, and come with extended edges that can slide into slots of precise dimension. They are easy to install and require no special equipment or skills.
How It Works
This pop-in fastener is designed with extended edges to be inserted into a same-width channel where attachment is desired. The polypropylene base grips the inside of the channel and holds tight. The fastener can 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. This means that the Dual Lock fastener can be used to attach components before they enter the final assembly plant, helping to reduce the number of parts and assembly time.
Stems offer more strength than hook and loop closures yet easily peel apart. Combinations of stem densities and the engaged area provide adjustable and proportional engagement and disengagement force to meet application requirements. Dual Lock fasteners are offered in three different densities (stems per square inch): 170, 250, and 400. Dual Lock fastener SJ3229 has 250 stems per square inch (25mm), offering a tight hold, and can be mated to Type 170, 250 or 400.
3M™ Dual Lock™ Reclosable Fasteners can replace conventional mechanical fasteners in a wide range of assembly and attachment applications where reclosability or 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. Other application examples include attaching accessories and equipment, window and door trim panels, sunroof rings and vibration and sound damping control.
3M Science Delivers Closures You Can Count On
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 a slide-in piece and multiple closures, look no further than the long-lasting durability of the 3M™ Dual Lock™ Reclosable Fastener SJ3229 Slide-In Piece Part. It is yet another outstanding example of how 3M technologies advance operations in the automotive industry, providing both ease of use and superior results.