Steel-Tube Reinforcement
Fastens the aluminum post wall to the 1-1/4″ × 1-1/4″ steel tube sleeved inside the post.
Build a stronger Alumission fence or gate post connection with #12 × 1″ 410 stainless steel self-drilling screws. The drill point is designed to penetrate compatible aluminum and steel, while the 5/16″ hex washer head provides secure driver engagement and a broad bearing surface.
These screws are primarily used to fasten an Alumission aluminum post to the 1-1/4″ × 1-1/4″ steel reinforcement tube inside it. Use them when the steel tube is installed by itself or when it is attached to a compatible base plate.
A practical fastener for reinforced Alumission post installations using the 1-1/4″ square steel inner tube.
Fastens the aluminum post wall to the 1-1/4″ × 1-1/4″ steel tube sleeved inside the post.
Use the same connection when the square steel tube is attached to a compatible base plate.
The 5/16″ external hex washer head helps the driver stay engaged and distributes clamping force.
410 stainless steel provides the hardness needed for a self-drilling tip plus outdoor corrosion resistance.
Included: One pack containing 50 #12 × 1″ stainless steel self-drilling screws.
Sold separately: Aluminum posts, 1-1/4″ × 1-1/4″ steel reinforcement tube, base plates, base covers, profiles, and installation tools.
Review the fastener dimensions, drive size, material, and intended aluminum-to-steel post application.
Dimensions are in inches. Confirm placement, material thickness, embedment, and structural requirements for the specific installation.
Answers about compatibility, installation, material, driver size, and package quantity.
They primarily fasten Alumission aluminum posts to the 1-1/4″ × 1-1/4″ steel reinforcement tube sleeved inside the post.
Yes. Use them to secure the aluminum post to the square steel tube when that tube is attached to a compatible base plate.
Yes. They can secure the aluminum post to the 1-1/4″ × 1-1/4″ steel tube whether the tube is used alone or with a compatible base plate.
Yes. They are designed for fastening an Alumission aluminum post wall to a compatible internal steel reinforcement tube.
Use a 5/16″ nut driver or socket for the external hex washer head.
The point self-drills through compatible aluminum and steel and may eliminate a separate pilot hole. Material thickness, coatings, tool speed, and job conditions can still make pre-drilling appropriate.
They are made from 410 stainless steel for self-drilling hardness and exterior corrosion resistance.
Each package contains 50 screws.
Tighten until the connection is secure and the washer head is seated. Avoid overtightening, which can strip the aluminum or damage the connection.
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