Consumables & expendables · part number

503944

This number names 2 distinct parts in the graph — a shared stock number or customer reference, never merged by guesswork. Pick the part you hold:

503944 CARDION INC

INSULATOR,WASHER

503944 AIMTRON SYSTEMS, LLC

INSULATOR,WASHER

This crosswalk identifies candidate equivalents with cited evidence. It is not an airworthiness approval. Substitution decisions remain subject to your organisation’s procurement and engineering approval process and the governing maintenance data (AMM/CMM/SRM/CML/OMAT).