3M 7000051897 Dual Lock Reclosable Fastener SJ3542 Black

Product Description

The 3M 7000051897 is a dual lock reclosable fastener sold as the SJ3542 in a black finish, available in a 0.75-inch-wide by 50-yard roll. It consists of a polypropylene mushroom-stem closure strip with a rubber-based pressure-sensitive adhesive backing. The fastener engages at a density of 400 stems per square inch and produces an engaged thickness of 0.23 inches when mated. The closure mechanism is rated for up to 1,000 open-and-close cycles. Rated for indoor use, it performs in temperatures up to 120 degrees F. Licensed HVAC, electrical, and general trade contractors use this product for securing panels, wire management, and equipment mounting in conditioned indoor spaces.

This reclosable fastener is suited for indoor applications where a tool-free, repositionable mechanical bond is required. The adhesive backing bonds to a range of substrates including acrylic, polycarbonate, ABS, powder-coated paint finishes, and low surface energy materials such as polypropylene and polyethylene. Typical applications include securing access panels, mounting control modules, organizing wiring, and affixing nameplates or protective covers in HVAC, electrical, and light industrial settings.

Key Features

• 400 stems per square inch for consistent, repeatable closure engagement
• Rated for 1,000 open-and-close cycles for long service life in maintenance-access applications
• 0.23-inch engaged thickness provides a low-profile mechanical bond
• Rubber-based adhesive backing adheres to a broad range of plastic and painted surfaces including low surface energy substrates
• Temperature resistance up to 120 degrees F — suitable for indoor conditioned environments
• Continuous 50-yard roll allows field cutting to any required length

Compatibility

Bonds to acrylic, polycarbonate, ABS, powder-coated paints, polypropylene, and polyethylene substrates. Designed for indoor use only. Not rated for outdoor, high-humidity, or high-temperature environments beyond 120 degrees F.

Installation Notes

Clean and dry the mating surface thoroughly before applying the adhesive backing — contaminants such as oils, dust, or moisture will reduce bond strength. Allow adequate dwell time after initial application before engaging the closure under load. Cut strips to length using shears or a utility knife. This fastener is for indoor use only and should not be installed in areas exposed to direct moisture, UV, or temperatures above the rated limit.

Technical Specifications

• Width: 0.75 inches
• Roll Length: 50 yards
• Color: Black
• Stem Density: 400 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life Rating: 1,000 cycles
• Maximum Temperature: 120 degrees F
• Backing Material: Polypropylene with rubber-based adhesive
• Weight: 1.3 pounds
• Unit of Measure: Roll

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000051897