3M 7100021077 Dual Lock Reclosable Fastener TB3540

Product Description

The 3M 7100021077 is a Dual Lock reclosable fastener strip in the TB3540 configuration, featuring a 250/250 stem density (250 stems per square inch on each mating surface) and a rubber-based pressure-sensitive adhesive backing. Made from black polypropylene, the strip measures 1 inch wide by 10 feet long and delivers an engaged thickness of 0.23 inches when closed. Rated for up to 1,000 closure cycles, it is suited for repeated attach-and-release applications where a secure mechanical fastening solution is needed indoors. Installation requires no tools beyond cutting to length and pressing the adhesive side firmly to the substrate.

This fastener strip is intended for indoor use across a wide range of assembly, mounting, and panel-attachment applications. It performs in low-temperature environments and is rated to withstand up to 120 degrees F. The adhesive is formulated to bond to many plastics including acrylic, polycarbonate, and ABS, as well as powder-coated painted surfaces and low surface energy materials such as polypropylene and polyethylene. Typical applications include securing access panels, cable management covers, instrument housings, and similar components where tool-free removal and reattachment is required.

Key Features

• 250/250 stem density configuration delivers consistent mechanical closure force across the mating surfaces
• Rubber-based adhesive backing bonds to a broad range of plastics, powder-coated paints, and low surface energy substrates
• Rated for 1,000 closure cycles for long-term repeated use
• 0.23 inch engaged thickness for low-profile assemblies
• Temperature resistance up to 120 degrees F with low-temperature performance capability
• Black polypropylene construction for UV-stable, chemical-resistant performance indoors

Compatibility

Designed for bonding to acrylic, polycarbonate, and ABS plastics, powder-coated painted surfaces, and low surface energy materials including polypropylene and polyethylene. Intended for indoor use only.

Installation Notes

Clean and dry the substrate surface thoroughly before applying the adhesive backing to ensure maximum bond strength. Press the adhesive side firmly to the mounting surface and allow adequate dwell time before loading. Cut the strip to the required length using scissors or a utility knife. This fastener is rated for indoor use only and should not be installed in outdoor or high-humidity environments where the adhesive bond may be compromised.

Technical Specifications

• Stem Density: 250/250 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life: 1,000 cycles
• Temperature Resistance: 120 degrees F
• Width: 1 inch
• Length: 10 feet
• Color: Black
• Material: Polypropylene with rubber-based adhesive
• Adhesive Type: Rubber-based pressure-sensitive
• Use Environment: Indoor only
• Weight: 0.5 pounds
• UPC: 00051111078006

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100021077