1515 Aero Rail Button
thingiverse
This is the aero version of the standard 1515 (for 8020 aluminum extrusion) rail button using the NACA0020 airfoil. There are four versions you can download: 1) #8-32 machine screw 2) #10-32 machine screw 3) Rounded 4) Unrounded The hole for the flat-headed screw is recessed.
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