Housing for 0.250" quick-connect terminals
The 521205-7 is the 3-position natural nylon housing in TE's Mark III series for 0.250" (6.35mm) quick-connect terminals. It mounts free-hanging inline and stacks top-to-bottom, accepting female receptacles with 0.250" tabs.
Position count across the Mark III series
The 3-position 521205-7 sits alongside the 5-position 521207-4 in the Mark III housing family — both share the 0.250" terminal size, nylon material, and free-hanging inline mount.
Color and peer variants
The natural-colored 521205-7 is functionally identical to the blue 521205-9 — both are 3-position housings with the same terminal size, material, and stacking direction; the color is the only difference.