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.

Dynabrade 94960 1/4" Composite-Style Coupler, 1/4" Female
3M 05579, Cloth Belt 577F, 80 YF-weight, 2 in x 48 in, Film-lok, Single-flex, 7010308379, 50 per case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M 26119, PPS Series 2.0 Adapter, Type S27, 16 mm Male, 1.5 mm Thread, 7100135925
3M 96673, Glass Cloth Tape 398FR, White, 3 in x 36 yd, 7 mil, 7000001301
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 26578, Accuspray ONE Pro Spray Gun Kit for PPS Series 2.0, 7100158715
3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
3M 01332, PSA Cloth Disc 348D, 80 X-weight, 3 in x NH, Die 300V, 7000118881
Norton 66254489957 Wheel, Vortex-7am, 6" X 1/2" X 1" C2312 Nor VTME7 PH VTC+, 4 Each
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
3M 35830, Hookit Dust Extraction Flexible Radius Sanding Block, 133 mm x 66 mm, 7100256625
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M 07466, Scotch-Brite Roloc+ Clean and Strip Disc 7466, 4 in x 1/2 in S XCS, 7000120779, 10/case
3M 28214, Cubitron II Roloc Disc 984F, 60+ YF-weight, TR, 2 in, Die R200P, 7010361116
3M 94505, SecureFit Hard Hat H-704SFR-UV, Green, 4-Point Pressure Diffusion Ratchet Suspension, with UVicator, 20 ea/Case, 7100239994
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 20360, Scotch-Weld Epoxy Adhesive 2216, Gray, Part B, 5 Gallon Drum (Pail), 7000046360
3M 40776, Scotch-Weld Epoxy Potting Compound DP270, Clear, 200 mL Duo-Pak, 7100228179, 12/Case
Standard Abrasives 840037, Quick Change Surface Conditioning GP Disc, A/O Coarse, TSM, Brown, 3/4 in, QS75KM, 7000121646, 50/case
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 20912, PSA Cloth Disc 348D, 40 X-weight, 2 in x NH, Die 200P, 7000118920
3M 76733, Cloth Belt 777F, 80 YF-weight, 6 in x 48 in, Film-lok, Single-flex, 7000118454, 20 per case
3M 76624, Roloc Disc 777F, 60 YF-weight, TR, 1 in, Die R100N, 7000045620
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 08061, Plastic and Emblem Adhesive, 5 oz Tube, 7000045518, 6 per case
Standard Abrasives 32953, PSA A/O Disc, 711880, 2 in x NH, 60, 7010310798
3M 01334, PSA Cloth Disc 348D, 50 X-weight, 3 in x NH, Die 300V, 7000118879
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 62611, Scotch-Weld Threadlocker TL62, Red, 250 mL Bottle, 7100039195, 2/case
3M 20908, PSA Cloth Disc 348D, P100 X-weight, 2 in x NH, Die 200P, 7000118874
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10
3M 29830, Sanding Screen, 60 Grit, 19 in x NH, 7100160131
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
3M 77197, Scotch-Brite™ Roloc™ Deburr and Finish PRO Unitized Wheel,TR, 3 in x 1/8 in x NH, 8C CRS+, 7100109130, 40/box 