ISO-10303-21; HEADER; /* 5640-01-371-3264 Thermal Insulation Board */ ENDSEC; DATA; /* NSN 5640-01-371-3264 FSC 5640 */ ENDSEC; END-ISO-10303-21; Segal Supply — mock CAD asset SKU: 5640-01-371-3264 Name: Thermal Insulation Board Format: SAT Standards: NSN 5640-01-371-3264, FSC 5640 Generated: 2026-06-18T20:43:07.848Z NOTE: placeholder geometry for demonstration. Production assets stream from the CAD repository behind this same URL with DATA_SOURCE=live.