The 1” Modular Cube, 0-Thread, 3-Countersunk is designed for applications where tubes must be fixed without rotation. It includes three countersunk clearance holes that allow flat-head screws to pass through the cube and fasten into threaded inserts installed in the mating tubes.
Each fastener is installed through an access hole on the opposite cube face and seats against an internal surface inside the cube. After assembly, the access holes can be closed with the included plastic snap covers for a clean, professional look.
In the image below, the cube is shown in a typical 90° corner configuration. Tubes are fixed in place using internal fasteners accessed from the rear, with clean visible surfaces on all exposed sides.
The cross-sectional rendering illustrates how the fastener enters from one face and sits flush against an internal stop. The opposing access hole is aligned for driver tool entry and capped with a removable snap plug after assembly.
Constructed from 6061-T6 aluminum with a black anodized finish, the cube balances strength, light weight, and corrosion resistance. Whether you're building a modular test fixture, aerospace frame, or robotic enclosure, this cube simplifies assembly while providing robust structural performance.