{"product_id":"3m-7010315781-dual-lock-reclosable-fastener-sj3440-black","title":"3M 7010315781 Dual Lock Reclosable Fastener SJ3440 Black","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe 3M 7010315781 is a plain-backed, no-adhesive Dual Lock Reclosable Fastener supplied on a roll measuring 0.5 inches wide by 50 yards long. The fastener features 250 mushroom-shaped stems per square inch and an engaged thickness of 4.1 mm. When mated face-to-face, the interlocking stems generate tensile strength high enough to substitute for screws, rivets, and other mechanical fasteners. The black color and compact stem profile make it suitable for applications where a clean, finished appearance is required. Trade professionals and OEM assembly technicians use this fastener wherever a reliable, repositionable mechanical closure is needed without adhesive.\u003c\/p\u003e\u003cp\u003eThe SJ3440 Dual Lock fastener is used across a broad range of industries including transportation, electronics, business equipment, machinery, medical equipment, and sign and display fabrication. Its plain-backed design allows it to be paired with adhesive transfer tapes, heat bonding, or mechanical attachment methods suited to the substrate. The roll format supports high-volume cutting and custom-length installation in production or field service environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e250 stems per square inch for high tensile closure strength\u003c\/li\u003e\n\u003cli\u003ePlain backed with no adhesive — pairs with separately selected bonding method\u003c\/li\u003e\n\u003cli\u003eEngaged thickness of 4.1 mm for consistent interlock depth\u003c\/li\u003e\n\u003cli\u003eRoll format: 0.5 inches wide by 50 yards long for flexible cut-to-length use\u003c\/li\u003e\n\u003cli\u003eBlack color for discrete or finished-appearance installations\u003c\/li\u003e\n\u003cli\u003eReclosable design allows repeated engagement and release without degradation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use as a reclosable mechanical fastener in transportation, electronics, business equipment, machinery, medical, and sign and display applications where no-adhesive plain-backed fastener tape is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation method depends on substrate — attach using adhesive transfer tape, epoxy, or mechanical fastening appropriate to the surface material. Ensure mating surfaces are clean and free of oil, dust, or contamination before bonding the fastener strip. Cut to length using shears or a utility knife. Align mating strips carefully before pressing together, as the interlocking stems engage immediately on contact.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem Density\u003c\/strong\u003e: 250 stems per square inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngaged Thickness\u003c\/strong\u003e: 4.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 50 yards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking\u003c\/strong\u003e: Plain, no adhesive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Roll\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7010315781\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51347330990386,"sku":"7010315781","price":901.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310517380.jpg?v=1782101829","url":"https:\/\/voomisupply.com\/products\/3m-7010315781-dual-lock-reclosable-fastener-sj3440-black","provider":"Voomi Supply","version":"1.0","type":"link"}