Part number NAS1601 appears under 55 stock numbers

Manufacturers reuse part numbers across items. Each stock number below is its own federal item record — pick the one your drawing or solicitation cites.

5331-01-021-6716 — O-RING · FSC 5331
5331-01-407-2799 — O-RING · FSC 5331
5331-00-935-9238 — O-RING · FSC 5331
5331-01-472-5012 — O-RING · FSC 5331
5331-00-689-6472 — O-RING · FSC 5331
5331-01-499-9401 — O-RING · FSC 5331
5331-01-176-5901 — O-RING · FSC 5331
5331-01-127-7612 — O-RING · FSC 5331
5331-01-326-3485 — O-RING · FSC 5331
5331-01-365-1069 — O-RING · FSC 5331
5331-01-358-1578 — O-RING · FSC 5331
5331-01-316-1487 — O-RING · FSC 5331
5331-01-071-0090 — O-RING · FSC 5331
5331-01-052-1806 — O-RING · FSC 5331
5331-01-365-1064 — O-RING · FSC 5331
5331-01-316-1488 — O-RING · FSC 5331
5331-01-184-6493 — O-RING · FSC 5331
5331-01-669-5323 — O-RING · FSC 5331
5331-01-648-9363 — O-RING · FSC 5331
5331-01-603-8443 — O-RING · FSC 5331
5331-01-482-4014 — O-RING · FSC 5331
5331-01-365-1068 — O-RING · FSC 5331
5331-01-356-9429 — O-RING · FSC 5331
5331-01-356-3140 — O-RING · FSC 5331
5331-01-349-0663 — O-RING · FSC 5331
5331-01-310-8372 — O-RING · FSC 5331
5331-01-660-8054 — O-RING · FSC 5331
5331-01-551-0741 — O-RING · FSC 5331
5331-01-488-6527 — O-RING · FSC 5331
5331-01-394-7459 — O-RING · FSC 5331
5331-01-394-7385 — O-RING · FSC 5331
5331-01-389-6095 — O-RING · FSC 5331
5331-01-387-5853 — O-RING · FSC 5331
5331-01-370-0594 — O-RING · FSC 5331
5331-01-365-1063 — O-RING · FSC 5331
5331-01-363-6980 — O-RING · FSC 5331
5331-01-359-2117 — O-RING · FSC 5331
5331-01-358-9609 — O-RING · FSC 5331
5331-01-357-7176 — O-RING · FSC 5331
5331-01-349-2771 — O-RING · FSC 5331
5331-01-320-3875 — O-RING · FSC 5331
5331-01-308-1045 — O-RING · FSC 5331
5331-01-307-8538 — O-RING · FSC 5331
5331-01-694-2190 — O-RING · FSC 5331
5331-01-487-2617 — O-RING · FSC 5331
5331-01-428-7106 — O-RING · FSC 5331
5331-01-415-1169 — O-RING · FSC 5331
5331-01-414-6609 — O-RING · FSC 5331
5331-01-400-0515 — O-RING · FSC 5331
5331-01-399-3910 — O-RING · FSC 5331

Showing the 50 best-attested of 55 stock numbers. Search for NAS1601 to see the rest.