0.690 in. Dia; glass sealed
NSN 6620-01-234-1799
NSN 6110-00-525-3418
NSN 5945-01-218-0809
NSN 6320-01-082-2459
NSN 5945-01-291-9108
NSN 5990-00-787-7758
NSN 4140-01-473-9080
NSN 6645-01-379-7725
NSN 5895-01-643-2620
NSN 5975-01-640-7748
NSN 5985-01-580-2024
NSN 4140-01-298-8919
Last Updated: 07/29/2025