VELCRO® Brand Extreme Lock Fasteners pack super strong holding power into mere inches of hook to hook engagement. Holds 2 lbs per square inch up to 15 lbs. VELCRO® Brand Extreme Lock Fasteners omnidirectional hook to hook fastener works like a charm even in extreme conditions. And because they are omnidirectional, you can easily mount cameras, lights, sensors, and solar-powered accessories indoors or out. No tools required. On a broad range of surfaces. Apply to a clean, dry surface, allow the adhesive to set and snap, you’re done. Extreme Lock Fasteners are strong enough for outdoor, vertical applications even in extreme temperatures. They will hold fast through rain, snow and sweltering heat while supporting up to 2.5 pounds per square inch, not to exceed 15 pounds. The snap tells you it’s securely fastened. Available in squares and strips, Extreme Lock Fasteners will become the most sought after item in your tool kit.
• Strong, precise, flush, wobble-free mounting
• Apply with confidence
• Snaps together with an audible click, so you know it’s secure
• Super strong holding power packed into mere inches of hook-to-hook engagement
• High strength, long term, attachment, where the fastener is infrequently opened and closed
• For indoor and outdoor use. Water and UV resistant. Secure hold even in extreme conditions.
• Adheres to smooth or textured (mildly rough) surfaces, including metal, wood, glass, vinyl and concrete.
• Not recommended for use on drywall
Extreme Lock fasteners pack super strong holding power into mere inches of hook to hook engagement. Small pieces, like the one-inch squares or 3 in x 1 in strips, will get most jobs done. We recommend one square inch of fastener for each 2.5 pounds of load, not to exceed a total weight of 15 pounds. Extreme Lock fasteners are not recommended for drywall, polypropylene, polyethylene or fabric surfaces Apply at 50 F or higher Apply to a clean, dry surface free of dust, debris or oils Remove the protective liner to expose the adhesive and press firmly along the full length to ensure a firm adhesive bond to the surface Touching the adhesive will weaken performance Adhere tape to the application surface and allow to set for 60 minutes prior to mounting. Adhesive reaches maximum strength after 24 hours Use minimum one square inch of fastener for each 2.5 pounds of weight. Total weight should not exceed 15 pounds. Minor hook shredding is normal upon repeated opening and closing and does not materially affect closure performance.
Q: I received only one side of the fastener—is there a soft side?
A: Extreme Lock fasteners are made of mushroom shaped hooks that snap together. They are unlike traditional hook & loop since the one part engages onto itself—no need for two different sides. Note: not recommended for use with traditional hook & loop fasteners.
Q: How much weight can Extreme Lock fasteners hold?
A: Extreme Lock fasteners hold 2.5 pounds of weight per square inch of fastener, not to exceed 15 pounds of weight in total. A small piece of Extreme Lock fastener packs super strong holding power.
Q: How do I disengage Extreme Lock fasteners?
A: Peel the fastener apart beginning on one edge of the fastener. Working your way across, lift gradually towards the opposite edge.
Q: Is the adhesive on Extreme Lock fasteners removable?
A: The adhesive is permanent. Removing it may damage the substrate.
Q: What is the operating temperature of Extreme Lock fasteners?
A: Once the adhesive fully bonds to the substrate (after 24 hours), the operating temperature range of Extreme Lock fasteners is -40 F to 194 F (-40 to 90 C).
Q: What surfaces can bond to Extreme Lock fasteners?
A: A broad range of smooth or textured surfaces, including: metal, wood, glass, vinyl and concrete. Extreme Lock fasteners are not recommended for use on drywall.
Q: What is meant by “textured” surfaces?
A: Mildly rough. If unsure, test in an inconspicuous area.
Q: Can Extreme Lock fasteners be applied in cold temperatures?
A: No—a minimum of 50 F is required when applying the adhesive. Once bonded, operating temperature is -40 F to 194 F (-40 C to 90 C).
Q: I am a musician and want to mount my guitar effects pedals to a baseboard. Can I use Extreme Lock fasteners to do that?
A: Mounting effects pedals is a great application for Extreme Lock fasteners. They have excellent tensile strength for a superior hold.
Q: I need to mount a sign in the gymnasium at our school. Can I use Extreme Lock for that?
A: Yes so long as the sign is a semi-rigid or rigid material.
Q: Will Extreme Lock fasteners bond to fabric?
A: Unfortunately, Extreme Lock fasteners are not recommended for fabric.
Q: Can I use Extreme Lock fasteners to hold my sofa cushions down?
A: Not recommended since many sofa cushions and sofas are fabric based and are often treated with stain proof coatings that resist the adhesive bond.
Q: Can I use Extreme Lock fasteners outdoors?
A: Yes—Extreme Lock fasteners are UV and water resistant.
