Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW
PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include end_item_identification: ACFT ENG R1820. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-021-3320, indicating validated use in U.S.
government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
69-668
NSN:4720-00-021-3320 FSC:4720 CAGE:30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)