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Navy NEC · Logistics

S12B Military Postal Clerk

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

A Military Postal Clerk processes domestic and international mail, including directory mail and items requiring special services. The clerk performs administrative, financial, supply, equipment accountability, postal security, mail routing, and Automated Military Postal System functions.

Core Skills

  • Postal security and offense identification
  • Special-service and directory mail processing
  • Postal finance window operations
  • Basic Automated Military Postal System operations

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Postal Service Clerks

Military finance window operations and domestic, international, and special-service mail processing transfer directly to civilian postal counter work.

How to prepare: Practice calculating postage for sample letters and parcels by weight, destination, and service using current civilian postal rates.

What the civilian work involves
  • Weigh letters and parcels, compute mailing costs based on type, weight, and destination, and affix correct postage.
  • Check mail to ensure correct postage and that packages and letters are in proper condition for mailing.
  • Obtain signatures from recipients of registered or special delivery mail.

Mail Clerks and Mail Machine Operators, Except Postal Service

Military mail routing, movement, and proper handling experience supports incoming and outgoing mail distribution in civilian organizational mailrooms.

How to prepare: Arrange hands-on practice with a postage meter, including setting postage and processing sample outgoing mail.

What the civilian work involves
  • Verify that items are addressed correctly, marked with the proper postage, and in suitable condition for processing.
  • Sort and route incoming mail, and collect outgoing mail, using carts as necessary.
  • Affix postage to packages or letters by hand, or stamp materials, using postage meters.

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC S12B

    [1] NEC entry "S12B - Military Postal Clerk"; cached text line 10338; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Postal security and offense identification, Special-service and directory mail processing, Postal finance window operations, Basic Automated Military Postal System operations, Postal Service Clerks (O*NET 43-5051.00), Mail Clerks and Mail Machine Operators, Except Postal Service (O*NET 43-9051.00)

  2. O*NET: Postal Service Clerks

    [2] O*NET 30.3 occupational data

    Supports: Postal Service Clerks (O*NET 43-5051.00)

  3. O*NET: Mail Clerks and Mail Machine Operators, Except Postal Service

    [3] O*NET 30.3 occupational data

    Supports: Mail Clerks and Mail Machine Operators, Except Postal Service (O*NET 43-9051.00)

Defense contractor jobs for S12B

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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