A flat head bolt with a bearing surface that is countersunk to a 150 degree angle. Although flat, the head has a measurable side height causing it to protrude above its mating surface when it is completely tightened. Directly below the head is a square neck and a threaded section that has a unified thread pitch.
The square neck design keeps the bolt from turning as a nut is tightened. The flat head feature gives a lower profile on the front or top side of the fastening than a round head carriage bolt. Designed specifically, but not exclusively for the garage door industry.
All carriage are made to ASME standard specs. Click on the Data Sheet Icon for product drawings, dimensions, performance and mechanical data.
Needing a custom carriage bolt? AFT offers in-house plating and customization including: Xylan, Black Oxide, drilling, cutting, nylon patch and more. Please contact us for a quote.
