An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

4321 - CPO Headgear

SECTION 3 PART 2 Article
1. CAP DEVICE 4321.1
2. CHIN STRAP 4321.2
3. HEADGEAR 4321.3


1. Cap Device (CPO).  A Chief Petty Officer cap device consist of a gold fouled anchor with silver block letters "USN" superimposed on the anchor's shank.  Senior Chief, Master Chief, Master Chief Petty Officer of the Navy and Senior Enlisted Advisor, Chairman Joint Chief of Staff cap devices have one, two, or three silver stars are attached above the anchor's stock as follows:


2.  Chin Strap.  The chin strap is ½ inch wide made of black patent leather or vinyl, and adjusted to fit snugly against the cap.  Wear the chin strap with the grommet to your left.

3.  Headgear

a.  Combination Cap.  The Combination cap has a cap device as described above.  Gold navy eagle buttons attach the black chin strap to the cap frame through a black mounting band.  The cap device is attached to the mounting band with the stock's unfouled arm to the wearer's left.

b.  Garrison Cap.  Center a miniature CPO cap device on the wearer’s left side of the garrison cap, with the center of the device placed 2 inches from the front crease of the garrison cover and 1-1/2 inches from the bottom of the cover as shown in the figure below.

c.  Navy/Command Ball Cap.  Miniature CPO cap device insignia may be worn on the navy/command ball cap by E7-E9 personnel. Center the device on the front of the ball cap, and 1-1/4 inches above the visor as shown in the figure below.

d.  Size of CPO Devices


Cap Device:  1 - 3/4 inch
Miniature Cap Device:  1-1/4 inch
Collar Device:  1 inch
  Veterans Crisis Line - Dial 988  Safe Helpline  NCIS Tips  Sexual Assault Prevention & Response  NFAAS

Need Career, Pay or Personnel help?
Call MyNavy Career Center: 833.330.MNCC,
or 901.874.MNCC (DSN 882.6622)

Email MNCC, MNCC Chat 
Comments or Suggestions about this website?
Email the Webmaster

5720 Integrity Drive
Attn: PERS-### or BUPERS-###
Millington, TN 38055-0000

Search This Site
This is an Official U.S. Navy Website

Site Map | FOIA | U.S. Navy | U.S. Navy Recruiting
No Fear Act | | Privacy Policy
Open Government | Plain Writing Act
Veterans Safe Helpline | DoD SAPR | NETC 
Accessibility/Section 508 | Information Quality
Privacy Program | Veteran Crisis Line | VA Vet Center | FVAP