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Black self-mating dual lock fastener roll with mushroom stems, 150 ft length, 3/4 in width, rubber adhesive backing, pack of 2

3M

3M SJ3540 Mechanical Push Button Door Lock

SKU CH-6NY5-6CCNG MPN SJ3540

A self-mating roll fastener with mushroom-shaped stems and rubber adhesive provides 22 psi shear strength across 150 feet of length

  • Product typeMechanical Push Button
  • Self-mating design enables reclosable fastening without separate hook and loop strips
  • Rubber-based pressure-sensitive adhesive bonds to surfaces for secure attachment
  • 150 ft roll length supplies ample material for multiple applications
  • 22 psi shear strength delivers reliable holding power for components
  • Package includes two rolls to support larger projects

Mechanical push-button fastener

This roll provides a reclosable mechanical fastener with mushroom-shaped stems that engage on contact. The self-mating design means both sides are identical, simplifying installation for maintenance panels, equipment covers or temporary mounting tasks. Two rolls are included in the pack.

Build integration and clearance

The 150 ft length lets you cut strips to suit panel dimensions or cable routing channels without waste. A rubber-based pressure-sensitive adhesive bonds to polyolefin backing and many painted or metal surfaces, eliminating drilled holes and freeing up internal volume for other components. Shear strength is rated at 22 psi for secure holding under vibration.

Thermals noise and power

The fastener contains no electronics, so it draws no power and generates no heat or acoustic noise. Performance remains stable across normal indoor temperature ranges, and the adhesive maintains bond integrity without thermal cycling concerns. No active cooling or power budget is required.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $418.99
Pricier than about 91% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand name3M
Product typeMechanical Push Button
Size & build
Shipping weight2.72 kg
Package size528 × 521 × 117 mm

Questions about this item

How much shear strength does the 3M SJ3540 provide for heavy panels?

The fastener delivers 22 psi shear strength, suitable for medium-duty panel attachment when both sides use the mushroom-stem design.

Does the rubber adhesive hold up when the roll is used continuously in warm conditions?

The rubber-based pressure-sensitive adhesive maintains bond during all-day exposure, though extreme heat may reduce long-term holding power.

What surface preparation is needed before applying the self-mating strips?

Clean the substrate with isopropyl alcohol, let it dry, then press the polyolefin-backed strips firmly to engage the mushroom stems.

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