ISO-10303-21; HEADER; /* 5120-01-045-4887 Hex Key (Metric) */ ENDSEC; DATA; /* NSN 5120-01-045-4887 FSC 5120 */ ENDSEC; END-ISO-10303-21; Segal Supply — mock CAD asset SKU: 5120-01-045-4887 Name: Hex Key (Metric) Format: STEP Standards: NSN 5120-01-045-4887, FSC 5120 Generated: 2026-06-18T21:50:16.769Z NOTE: placeholder geometry for demonstration. Production assets stream from the CAD repository behind this same URL with DATA_SOURCE=live.