FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
General Description
The Test Valve, cataloged under National Stock Number 4920-00-977-3333, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-060-9959N61616POSSIBLE MATCH
GUIDE RING,VALVE
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
4440-01-398-4573873-NMSPOSSIBLE MATCH
CARTRIDGE,DEHYDRATOR
Possible match (shared part number)Fisher Scientific Worldwide
5360-01-464-159361616POSSIBLE MATCH
SPRING,HELICAL,EXTENSION
Possible match (shared part number)Colt's Manufacturing Company, Llc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
61616
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-060-9959POSSIBLE MATCH
GUIDE RING,VALVE
N61616
4440-01-398-4573POSSIBLE MATCH
CARTRIDGE,DEHYDRATOR
873-NMS
5360-01-464-1593POSSIBLE MATCH
SPRING,HELICAL,EXTENSION
61616
Frequently Asked Questions
What is NSN 4920-00-977-3333?
NSN 4920-00-977-3333 is a Test Valve, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
What NSN replaces 4920-00-977-3333?
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-060-9959, 4440-01-398-4573, 5360-01-464-1593. Verify interchangeability with system specifications before substitution.
Is NSN 4920-00-977-3333 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 4920-00-977-3333?
NSN 4920-00-977-3333 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.