3M 7010341003 Dual Lock Reclosable Fastener SJ3540 Black

Product Description

The 3M 7010341003 is the Dual Lock Reclosable Fastener SJ3540, a black polypropylene mushroom-head fastener strip with a rubber-based pressure-sensitive adhesive backing. It delivers 250 stems per square inch and an engaged thickness of 0.23 inches, providing a firm mechanical closure rated for up to 1,000 open-and-close cycles. The strip measures 1.5 inches wide by 50 yards per roll and weighs 7.75 pounds. It is designed for indoor use on a range of substrates and is installed by HVAC technicians, equipment fabricators, electricians, and maintenance professionals who need a reliable, repositionable fastening solution without tools or hardware.

This fastener is suited for attaching panels, access covers, wire management components, insulation blankets, and lightweight equipment enclosures in both residential and light commercial applications. It bonds to many common surfaces including acrylic, polycarbonate, ABS, powder-coated paints, and low-surface-energy materials such as polypropylene and polyethylene. The roll format makes it well suited for production-line assembly or field installation where continuous lengths need to be cut to size on the job.

Key Features

• 250 stems per square inch for a strong, repeatable mechanical closure
• Rated for up to 1,000 open-and-close cycles
• 0.23-inch engaged thickness for low-profile mating
• Rubber-based adhesive backing for broad substrate compatibility
• Compatible with low-surface-energy plastics including polypropylene and polyethylene
• Indoor use; temperature resistance up to 120 degrees F

Compatibility

Designed for use with acrylic, polycarbonate, ABS, powder-coated paints, polypropylene, and polyethylene surfaces in indoor environments. Not recommended for outdoor exposure or high-temperature applications exceeding 120 degrees F.

Installation Notes

Clean and dry the mating surfaces thoroughly before applying the adhesive-backed strip, as contamination will reduce bond strength. Cut the fastener to the required length using scissors or a utility knife. Apply firm, even pressure along the full length of the strip after placement to activate the adhesive. No electrical shutoff is required for mechanical fastener installation, but follow any applicable facility or equipment lockout procedures when working on energized enclosures or panels.

Technical Specifications

• Stem Density: 250 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life: 1,000 cycles
• Width: 1.5 inches
• Length: 50 yards per roll
• Color: Black
• Backing Material: Polypropylene
• Adhesive Type: Rubber-based pressure-sensitive
• Maximum Temperature: 120 degrees F
• Use Environment: Indoor only
• Weight: 7.75 pounds
• Unit of Measure: Roll

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010341003