3M™ Scotch-Weld Gray

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3M™ Scotch-Weld™ Metal Bonder Acrylic Adhesive DP8407NS is a gray structural adhesive with high overlap shear and peel strength with good impact resistance and durability. This adhesive was designed to bond permanently to bare metals with minimal surface preparation, but also bonds well to wide variety of other materials, including most plastics.

3M™ Scotch-Weld™ Metal Bonder Acrylic Adhesive DP8407NS bonds to a variety of materials (especially bare metals such as aluminum, cold rolled steel, galvanized steel, copper, brass and bronze) while resisting corrosion. This gray structural adhesive can even bond slightly oily metal with minimal to no surface preparation. It provides excellent bond strength and impact resistance, even at temperatures down to -40°F (-40°C). 3M™ Scotch-Weld™ Metal Bonder Acrylic Adhesive DP8407NS is ideal for industrial applications where permanent, high-strength bonds are required. Using the adhesive helps eliminate the grinding process and surface finishing time associated with welding, spot welding and mechanical fasteners.

Note: For mixing of the 45ML variant, please use p/n: 12-05508 with this item located in the "Accessories" tab.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


  • Bonds to a variety of substrates (especially bare metals) while resisting corrosion
  • Withstands powder coat and paint bake cycles up to 400ºF (204ºC) for at least one hour
  • Offers high shear, peel and impact strength for a tough and durable bond
  • Provides excellent bond strength and impact resistance, even at temperatures down to -40ºF (-40ºC)
  • 7 minute work life and fast strength build-up at room temperature
  • Ideal for industrial applications with minimal surface preparation, such as slightly oily metal bonding
  • Moderate non-sag formula won't slump or spread excessively
  • Long shelf life, no refrigeration


Mix Ratio: 10:1
Approximate Viscosity at 75°F: 20,000
Approximate Mixed Work Life at 75°F: 7 minutes
Approximate Time to Handling Strength at 75°F: 24 minutes


  • Metal office furniture
  • HVAC equipment
  • Specialty vehicles (ambulance, trailer, fire truck)
  • Recreational vehicles (snowmobiles and ATV's)
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  • Metal fabrication
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Just the structural adhesive product I needed for my project.

Per A
March 15, 2021


Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does 4707 have a self applicator?

It does not. It comes as pictured on the website.

Q: Can 3M SCOTCH-WELD GRAY be used to bond plexiglass to a fiberglass frame?

Yes it should work great for that application.