Help PRODUCTS FOR BUSINESS PRODUCTS FOR CONSUMERS ABOUT US PARTICLES BY 3M 3MTM Dual LockTM Reclosable Fastener SJ3550 250 Black, 1/2 in x 50 yd 0.22 in (5.6 mm), 4 per case Bulk 3M ID 70070521094, UPC 00021200658150 Search Write a review Black, interlocking mushroomshaped heads (250 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times Overview Specifications Details Mates with Type 170, Type 250 or Type 400 stem densities to provide different strength combinations Resources Customer Reviews View Images White, acrylic, conformable foam tape bonds well to a variety of substrates including metals and plastics such as acrylics, View all details and ABS More... polycarbonate Specifications Adhesive Type General Purpose Acrylic Adhesive Applications Attaching City Bus light fixtures , Ceiling Attachment , Privacy Curtain Rail Attaching , Sunroof Trim Attachment , Wall Headliner Attachment , Wall Panel Attachment Brand Dual Lock Closure Life 1000 Color Black Engaged Thickness (Imperial) 0.23 Inch Flame Retardant No Indoor/Outdoor Both Industries Automotive , Construction , Electronics , Furniture , General Industrial , Medical , Military & Government , MRO , Packaging , Retail , Specialty Vehicle , Transportation Length 50 Linear Yard Length (Metric) 45.72 m Low Profile No Maximum Operating Temperature (Celsius) 93 Degree Celsius Maximum Operating Temperature (Fahrenheit) 200 Degree Fahrenheit Primary Liner Clear Polyolefin Primary Liner Thickness 4 mil Product Form Roll Solution for Wireless Network: Infrastructure Accessories Stem Density 250 Substrate 1 Glass (Inked Glass - Ceramic) , Metal (Aluminum Powder Coated - Copper - Stainless Steel Zinc/Galvanized) , Plastics/Composites (ABS - Carbon Fiber - Acrylic - Fiberglass - Polycarbonate - Polyester Polyimide - Polystyrene - Rigid Vinyl) Substrate 2 Glass (Inked Glass - Ceramic) , Metal (Aluminum Powder Coated - Copper - Stainless Steel Zinc/Galvanized) , Plastics/Composites (ABS - Carbon Fiber - Acrylic - Fiberglass - Polycarbonate - Polyester Polyimide - Polystyrene - Rigid Vinyl) Thickness (Metric) 5.7 mm Volatile Organic Compounds (VOCs) See Safety Data Sheet, Regulatory Data Sheet Width 0.5 Inch Width (Metric) 12.7 mm Details Black, interlocking mushroom-shaped heads (250 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times Mates with Type 170, Type 250 or Type 400 stem densities to provide different strength combinations White, acrylic, conformable foam tape bonds well to a variety of substrates including metals and plastics such as acrylics, polycarbonate and ABS Strong fastener secures with an audible snap, verifying closure An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance Features good temperature resistance of 200F (93C) Best suited for indoor and outdoor use 3MTM Dual LockTM Reclosable Fastener SJ3550 is the convenient alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including metals and plastics such as acrylics, polycarbonate and ABS. Unlock Simplicity Durable and secure, 3MTM Dual LockTM Reclosable Fastener SJ3550 has exceptional strength through its interlocking mushroom-shaped heads (250 stem density per square inch), providing up to 5X the tensile strength of typical hook-and-loop products. We designed this fastener with a white, acrylic, conformable foam tape protected by a removable, film liner. This solid, pressure sensitive foam tape features a strong, durable bond that is heat, chemical and UV resistant. With 3MTM Dual LockTM Reclosable Fastener SJ3550, there is no need for any drilling, screwing or sewing tools which makes for quick installation. Recommended Applications: Access panels Graphic attachment Specialty vehicles (interior attachments) General industrial attachment 3MTM Dual LockTM Reclosable Fasteners are available in three stem densities to customize for the strength requirements of your project Small components Design Flexibility 3MTM Dual LockTM Reclosable Fastener SJ3550 consists of interlocking mushroom-shaped heads that easily slide over each other, allowing for positioning of parts before being snapped together. This fastening process creates a durable attachment and provides fast product assembly with great design flexibility. Our reclosable fasteners can also engage with different stem densities for varying levels of strength and system performance. 3MTM Dual LockTM Reclosable Fasteners sound an audible snap when secure, which verifies closure of the attachment. To disengage, simply peel the pieces apart by hand. Our fasteners maintain their strength throughout multiple attachments and detachments. A lightweight alternative to metal fasteners, this product remains hidden beneath surfaces and does not interfere with the integrity of your material--providing aesthetic improvements and design flexibility. Hundreds of Reattachments in a Snap When two pieces of 3MTM Dual LockTM Reclosable Fasteners mate, 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. This product is well suited for many indoor and outdoor applications where a high strength and versatile reclosable fastening system is required. Delivers Long-Lasting Performance Not all design requirements are easily satisfied, but you can simplify your attachments. When you need a strong, reliable, yet removable closure, 3MTM Dual LockTM Reclosable Fasteners are the easy alternative to traditional fastening methods such as screws, nuts or bolts. This video is either unavailable or not supported in this browser Error Code: MEDIA_ERR_SRC_NOT_SUPPORTED If you are using an older browser please try upgrading or installing Flash. Session ID: 2018-0729:8ca92d09314e6bcbfdc43e4 Player ID: vjs_video_3 X OK Resources Brochure Catalogs New 3M Dual Lock Brochure2 (PDF, 4.3MB) 2017 IATD MRO Catalog (PDF, 65.7MB) 3M Recloslable Fastener Brochure HR (PDF, 17.0MB) Brochures 3MTM Dual LockTM Rreclosable Fasteners (PDF, 3.4MB) Features\Benefits Adhesives and Tapes Design Guide (PDF, 12.3MB) 3MTM Dual LockTM Reclosable Fasteners - Markets (MP4, 27.3MB) 3M Dual Lock Overview Video (MP4, 23.8MB) Bulletin Dual LockTM Reclosable Fasteners Att/Pres Sens Adh or Heat Bnd (PDF, 32.0KB) Product Selection Guides Dual LockTM Reclosable Fastener w/Acrylic Foam (PDF, 308.1KB) 3MTM Reclosable Fasteners Design Selection Guide (PDF, 1.3MB) Dual Lock Reclosable Fasteners - Roll Goods Design Criteria (PDF, 29.4KB) Product Single Image FuturoTM Codera Comfort Lift L (JPEG, 154.7KB) Customer Reviews Reviews Be the first to review this product 3M United States PRODUCTS INDUSTRIES BRANDS HELP NEWS Abrasives Automotive Post-it Help Center News Center Adhesives & Tapes Commercial Solutions Scotch Site Map Particles by 3M Advanced Materials Communications Scotch-Brite Films Consumer Command Filtration Design & Construction Filtrete View All Products Electronics Nexcare Energy ScotchBlue Health Care Manufacturing Mining, Oil & Gas Safety Transportation Press Releases REGULATORY ABOUT US SDS Search About 3M Transport Information Search 3M Careers RoHS & REACH Information Search California Supply Chains Act Disclosure (PDF, 84KB) UK Modern Slavery Act Statement (PDF, 169KB) Investor Relations Partners & Suppliers Government Customers Sustainability 3Mgives More Regulatory & Compliance Information SEARCH 3M Search FOLLOW US United States English The brands listed above are trademarks of 3M. 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