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Product Details

Weld Mount AT-8040 is a high-strength, 2-part adhesive, designed to bond metals in severe environments. Advanced adhesive formula bonds objects without sliding, even on vertical and overhead surfaces.

AT-8040 cures incredibly quickly: At room temperature, with little surface prep, it establishes a handling strength within 12 minutes and a functional cure within 45 minutes, creating a lasting bond with superior strength (2,500 lbs. strength in 40 minutes). This solvent-free and VOC-compliant adhesive works with most metals, plastics, and composite surfaces.

Purchase the AT-850 mixing tips separately for use with the AT-8040 cartridge. Mixing tips are available in packages of 10 or 50.

Note: Apply AT-8040 with the AT-300 Adhesive Dispensing Gun (sold separately). Also available in a 30 ml dual syringe.

Tech Specs
What AT-8040/8040M Bonds To What AT 8040/8040M Does Not Bond To
Aluminum Soft rubber
Steel Low energy plastics such as polypropylene and starboard
Stainless Steel Leather
Coated Metals Bronze
Fiberglass Brass
Gel Coats
Rim urethane
Liquid Molding Resins
PBT Blends
PET Blends
Info & Guides

Weld Mount System Advantages

  • Much stronger than traditional methods
  • Eliminates the need to drill into a composite skin and expose the core
  • Eliminates welding, drilling, tapping, grinding and finishing steps
  • Eliminates costly rework expenses resulting from inadvertent drilling through substrates
  • Eliminates blocking added during lamination in order to have a place to put screws

Technical Information


  • Cartridge Size (AT-8040): 50mL
  • Cartridge Size (AT-8040-30): 30mL
  • Mixing Tip: AT-850
  • Dispensing Gun: AT-300 Adhesive Dispensing Gun (sold separately)
  • Temperature for Use: 65°F to 80°F. Temperatures below 65°F will make the viscosity higher and slow the cure speed; above 80°F, the viscosity will be lower and the cure speed, faster
  • Gap Fill: 1/4"

Reviews for Weld Mount AT-8040 Adhesive

3 of 3 Reviews

February 15, 2023

Works wonderful
By Tom from Ohio

Verified Purchase

You know as the old saying goes. There is a right tool for a job, this is it. I recently re-rigged a whole boat. Weld mount had a Specific mount for any issue that I encountered. From stainless studs to zip tie mounts. The glue is Incredibly strong and sets up fast. Perfect for attaching wire and hoses.

Bottom Line Yes, I would recommend to a friend

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April 23, 2020

Adhesive seems to work as advertised
By trailerable trawler owner from Florida, Georgia, Ontario

Verified Purchase

Used Weld Mount adhesive to hang bins and racks on the ceiling of our boat with Weld Mount large headed threaded studs. When mixed, the adhesive has a consistency similar to toothpaste or smooth peanut butter so the threaded studs stick well where placed. Pot life allowed me to mix a batch then place 8 or so mounts at a time. This project is now about 10 months old and has survived through one winter outside of Atlanta well so couldn't ask for more.

Bottom Line Yes, I would recommend to a friend

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September 1, 2016

Just wish the kit included a few of the threaded stanoffs.
By Speckledmetrout from N. Carolina

Verified Purchase

Need 1" long 1/4 20 threaded standoffs to complete project. Where to buy?

Bottom Line Yes, I would recommend to a friend

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