COTS (Commercial Off The Shelf)
Parts that can be purchased from a vendor that are not custom made. The opposite of fabricated parts. COTS parts are not counted against the withholding allowance as long as they are not altered or part of a custom assembly.
Parts that are custom made and not commercially available. Fabricated parts are counted against the withholding allowance. COTS parts, once modified may be considered fabricated parts.
At competition teams are allowed their bagged robot, COTS parts, tools and a withholding allowance, which is up to 30 pounds of fabricated items which can be added to their robot. Other items can be fabricated at the competition, but not before, unless they fit within the withholding allowance.
Our robot must be bagged, in the elephant sized bag provided and locked with one of the blue tags provided at 9pm PT. Up to 30 pounds may be kept outside of the bag to continue working on. This does not include unattached batteries and motors, which may also be kept outside of the bag and do not count against the withholding allowance unless attached.
A low profile rounded head that is also driven with an allen key or hex driver. Used where a socket head screw might catch on an object, like the underside of the robot.
used with a socket and ratchet or a wrench. These are generally larger bolts or screws which need a larger tool to engage the head.
A screw type that requires counter sinking, but will sit flush against the surface. A countersink bit is used to drill a cone shape into wood or metal so the screw can sit down inside the depression.