Vent hole required
A cone-shaped, unthreaded, metallic or nonmetallic item, tapered through its entire length, primarily used to position and hold two or more mating parts in alignment.
NSN 5975-01-278-2830
NSN 5985-00-983-4751
NSN 5999-00-023-5415
NSN 6135-00-351-8606
NSN 6645-01-392-2022
NSN 2925-01-400-2286
NSN 6645-00-758-4567
NSN 5998-01-076-4729
NSN 6130-00-255-2809
NSN 6610-01-106-5012
NSN 6645-01-428-3576
NSN 6110-01-069-2966