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Black 3M Dual Lock reclosable fastener strip, 1 inch wide, mushroom stems on polypropylene carrier

3M

3M Dual Lock Type 250 Reclosable Fastener 1 in x 4 ft Black

SKU CH-W3S3-QAP2F

A reclosable fastener with 250 stems per square inch, 0.23 in engaged thickness and acrylic adhesive for metal, glass and high-energy plastics

  • TypeAdhesive Tapes
  • ColorBlack
  • 250 stems per square inch deliver strong reclosable hold
  • Engaged thickness of .23 inches provides secure interlock
  • Acrylic 300 LSE adhesive bonds metal, glass and high-energy plastics
  • Polypropylene carrier resists wear over 1,000 closure cycles
  • Replaces screws, rivets and hook-and-loop for removable panels

General-purpose reclosable fastener

3M Dual Lock Type 250 is a black adhesive fastener with 250 stems per square inch and an engaged thickness of .23 inches. The acrylic 300 LSE adhesive bonds to metals, glass and medium-to-high surface energy plastics and paint. Mushroom-shaped stems on a polypropylene carrier interlock for 5X greater closure strength than hook and loop.

Practical limits of stem density

Type 250 fasteners mate with type 170, 250 or 400 counterparts, and the combined stem number determines closure strength. The closure life is rated at 1000 cycles, so repeated opening and closing will eventually reduce holding power. The carrier thickness is 140 mils with a 4 mil liner, setting the minimum gap the fastener can bridge.

Replaces screws, clips and hook and loop

This fastener replaces conventional screws, clips, rivets, snaps, bolts and hook and loop where access or repositioning is needed. It is suited for doors, access panels, signs, cushions, headliners, display components and similar assemblies. The jump is worth it when a strong, removable bond is required without tools or permanent holes.

Highlights

  • 250 stems per square inch deliver strong reclosable hold
  • Engaged thickness of .23 inches provides secure interlock
  • Acrylic 300 LSE adhesive bonds metal, glass and high-energy plastics
  • Polypropylene carrier resists wear over 1,000 closure cycles
  • Replaces screws, rivets and hook-and-loop for removable panels

Specifications

TypeAdhesive Tapes
ColorBlack

Questions about this item

Which stem density should I choose — 170, 250 or 400?

Type 250 mates with 170, 250 or 400; the higher the combined stem count the stronger the closure, so select 250 for a balance of strength and engagement.

What does the 230-mil engaged thickness mean when the fastener is closed?

When mated, the two strips sit 0.23 inches thick, so allow that gap in your panel or door design.

How does the acrylic 300 LSE adhesive limit the surfaces I can bond to?

It bonds reliably to metals, glass and medium-to-high surface energy plastics and paint; low-energy plastics such as polyethylene or polypropylene may not hold.

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