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Clear adhesive fastener roll, mushroom stems on polypropylene carrier

3M

3M SJ3560 Dual Lock 250 Reclosable Fastener Clear 3/4 in x 10 ft

SKU CH-04D7-KTGSB

A clear reclosable fastener with 250 stems per square inch, .23 inch engaged thickness and 1000 closure cycles

  • TypeAdhesive Tapes
  • ColorClear
  • 250 stems per square inch for strong reclosable hold
  • Engaged thickness of .23 inches (230 mils) provides secure engagement
  • Closure life rated to 1000 cycles for repeated use
  • Clear polypropylene carrier blends with surfaces for discreet fastening
  • Mates with type 170, 250 or 400 fasteners for flexible attachment options

Clear reclosable fastener for removable mounting

3M SJ3560 Dual Lock 250 is a clear reclosable fastener supplied on a ten-foot roll three-quarters of an inch wide. It uses 250 mushroom-shaped stems per square inch on a polypropylene carrier with a white acrylic pressure-sensitive adhesive. The engaged thickness is .23 inches and the rated closure life is 1000 cycles.

Practical limits of stem density and mating

Type 250 fasteners can mate with type 170, 250 or 400 counterparts; the combined stem count determines closure strength. The adhesive bonds to metals, glass and medium-to-high surface-energy plastics and paint. Surfaces with lower surface energy or heavy contamination will not hold reliably. The fastener is not designed for structural loads that exceed the shear and tensile capacity of the acrylic adhesive bond.

Replaces screws, clips

This system replaces conventional screws, clips, rivets, snaps, hook-and-loop and bolts in applications that need frequent opening or repositioning. The jump is worth it when panels, signs, cushions, headliners, display parts, light fixtures, curtain rails or trim must be removed repeatedly without tools. It is not for buyers who need permanent tamper-proof fixation or load-bearing structural joints.

Highlights

  • 250 stems per square inch for strong reclosable hold
  • Engaged thickness of .23 inches (230 mils) provides secure engagement
  • Closure life rated to 1000 cycles for repeated use
  • Clear polypropylene carrier blends with surfaces for discreet fastening
  • Mates with type 170, 250 or 400 fasteners for flexible attachment options

Specifications

TypeAdhesive Tapes
ColorClear

Questions about this item

Which stem density should I choose among the 170, 250 and 400 options?

Type 250 mates with 170, 250 or 400; the higher the combined number the greater the closure strength, so pair 250 with 400 for maximum hold or with 170 for easier opening.

What does the 1,000 closure-life figure mean in daily use?

The fastener can be opened and closed about 1,000 times before the mushroom stems lose significant grip, so a panel opened twice a day would last over a year.

What does the 0.23-inch engaged thickness cap in practice?

When two strips are pressed together the joint adds roughly 0.23 inches to the assembly, so allow that gap when aligning panels or mounting hardware.

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