Our remarkable 3M Dual Lock Reclosable Fastener SJ3871 can be opened and closed over and over, up to 1,000 times before losing 50% of the original strength for repeated access or repositioning. The mushroom heads easily slide over each other allowing positioning of parts before they are snapped together to create a firm fastening attachment. When mated the fasteners are hidden from view and leave you with an unbroken surface to help create a smooth, clean appearance. The type 400 stem density polyolefin fastener mates to type 170 or 250 giving the user the option of different closure strength depending upon application.
Recommended Applications
- General industrial
- Transportation
- Specialty vehicle
- Medical
- Packaging
- Point of purchase displays
- Exhibits
- Electronics
- Construction
- Furniture
- Maintenance repair and operations (MRO)
This fastener is backed by a modified acrylic adhesive that bonds to many plastics (polyethylene, acrylic, polycarbonate and ABS), powder coated paints and medium to low surface energy materials with little or no surface preparation.
Hear the Snap
?Snap!? It?s the one word that best defines our extensive line of 3M Dual Lock Reclosable Fastener products. Here?s how it works: When two pieces of 3M Dual Lock Reclosable Fastener are pressed together, the stems flex and the mushroom heads slide past each other. After passing the mushroom heads on the opposing mating piece, a stem snaps up into its original position, interlocking with the opposing heads. Listen for the audible snap to signal that the fastener is engaged. The attachment formed may be as effective as screws or rivets, but will peel apart for repositioning. 3M Dual Lock Reclosable Fasteners are used extensively in transportation, electronics, business equipment, machinery, medical and sign and display markets.
Lose the Screws
The bond is strong but can easily be detached; just pull apart to disengage and reattach as needed. This means that our product gives you a strong, hidden closure with the convenience of multiple openings and closings so you can lose the screws, rivets, hooks, bolts, zippers and other unsightly attachment methods. In short ? our product is an aesthetically pleasing fastener that doesn?t sacrifice attachment strength; in fact, the 3M Dual Lock Reclosable Fastener SJ3871 is about five times stronger in tensile strength than 3M Hook and Loop Fasteners used in comparable applications. In many cases, this attachment method also saves the user money with less material used. Additionally, there?s no need to drill holes that might weaken the part or substrate, and no tools required to assemble or remove the part.
You expect more options to secure, attach and connect surfaces. 3M Dual Lock Reclosable Fasteners offer quick installation and high-strength attachment, yet can be opened as easily as zippers. That functional flexibility, as well as superior aesthetics, reduced weight, and savings in labor and installation costs, make our innovative fasteners a popular and effective solution.

3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 65055, Scotch-Brite Heavy Duty Hand Pad 7440, HP-HP, A/O Medium, 6 in x 9 in, 7100080459, 40/Case
3M 15913, Scotch-Brite Roloc Disc High Strength, TR, 2 in X NH A Medium, 7000000710
3M 20922, PSA Cloth Disc 348D, 60 X-weight, 1-1/2 in x NH, Die 150S, 7010326528.
3M 29831, Sanding Screen, 180 Grit, 18 in x NH, 7100160238
Dynabrade 53245 7" Dia. Type 27 Vertical Depressed Center Wheel Grinder, 3 HP, 8,500 RPM, 5/8"-11 Spindle
3M 03647, Scotch-Brite Edger Disc Pad, 7 in x .875 in, 7000133920
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
3M™ 07012, Supplied Air Hose W-9435-100/07012(AAD), 100 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005375, 1 EA/Case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 08994, Scotch-Weld Epoxy Adhesive DP100, Clear, 48.5 mL Duo-Pak, 7100148763, 12/case
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 05205, Marine Adhesive Sealant 5200, Black, 3 oz Tube, 7000118402, 6/Case
3M 19674, Scotch-Seal Industrial Sealant 800, Reddish Brown, 5 oz Tube, 7000000792, 36/Case
3M 30202, Disposable Plastic Wheel Maskers, 12 in - 15 in, 125 per box, 7000125074
3M 62612, Scotch-Weld Threadlocker TL71, Red, 10 mL Bottle, 7100039197, 10/case
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
3M 01552, Green Corps Stikit Disc 255U, 8 in, 24E, 7010298813, 20 discs per carton
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 14345, Marine Adhesive Sealant 4000 UV, Black, 3 oz Tube, 7010367954, 6/Case
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
3M 97956, Super 77 CA Multipurpose Spray Adhesive, Low VOC <25%, Clear, 24 fl oz Can, 7100014109, 12/Case
3M 94700, Cubitron ll Cloth Belt 947A, 60+ X-weight, 1/4 in x 24 in, Fabri-lok, Single-flex, 7010360589, 200 per case
3M™ 17323, Versaflo™ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
3M 50258, Roloc Disc 777F, 60 YF-weight, TSM, 3 in, Die RS300VM, 7010325551
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 29848, Sanding Screen, 180 Grit, 15 in x NH, 7100160815
3M 47191, Polyurethane Adhesive Sealant 550FC Fast Cure, White, 400 mL Sausage Pack, 7100197999, 12/Case
3M 14316, Marine Adhesive Sealant 4000 UV, Black, 295 mL Cartridge, 7010367955, 12/Case
3M 81734, Disc Pad Face Plate Ribbed, 5 in Medium Gray, 7000120516
3M 94717, Cubitron ll Cloth Belt 947A, 80+ X-weight, 1 in x 30 in, Fabri-lok, Single-flex, 7010294445, 200 per case
Standard Abrasives 840038, Quick Change Surface Conditioning GP Disc, A/O Medium, TSM, Maroon, 3/4 in, QS75KM, 7000121647, 50/case 
