16 mm projectInternal fit/opening about 16.4 mm; closure/fitting dimension 15.8 mm; wall thickness target 0.60–0.65 mm.
17 mm projectInternal fit/opening about 17.4 mm; closure/fitting dimension 16.9 mm; wall thickness target 0.60–0.65 mm.
Profile geometryPlain U cross-section with straight parallel legs and square-cut open ends. No chamfer, bevel, flare, return lip or hook. A 3.5 mm leg and minimum 0.65 mm wall were recorded in an earlier project; confirm the current drawing and sample.
Finish and QCGold/silver film coverage, film-line appearance, scratch resistance, fit, square-cut end consistency, color and packing are checked by project.