A projection which engages with a keyway to guide a component during mating.

A trench excavation made below the toe of a fill slope, excavated into firm, competent material. It's purpose is to establish a strong bond between the existing soil and the proposed fill slope. The keyway is filled with compacted fill.

A short pin or other projection which slides in a mating slot, hole, groove or keyway to guide two parts being assembled. Generally used in shell-enclosed connectors to obtain polarization.

A pin generally of a square tapered cross section used to lock dies into die blocks, etc.

A single lug of metal applied at the intersection of the head and shank. It engages a mating notch in the panel to provide increased spin-out resistance. The required notch in the panel is often difficult to produce and the insert must be carefully aligned during installation.

A short pin or other projection which slides in a mating slot or groove to guide two parts being assembled. Generally used in round, shell-enclosed connectors to prevent mating wrong connectors and to assist in polarisation.

(1) (External) A block partially mounted in a pocket at the perimeter of a die member to locate, add support, and/or back up that die member. It is accessible without removing the die member. (2) (Internal) A block mounted in mating pockets between two die members to locate and/or add support to those die members. It is not accessible without removing the die members.