FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
General Description
The Amplifier,quiescent, cataloged under National Stock Number 4920-01-040-6631, 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Equipment) of the Maintenance and Repair Shop Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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.
5365-01-191-45164551-1POSSIBLE MATCH
VENT RING
Possible match (shared part number)Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
6210-01-345-4190POSSIBLE MATCH
LIGHT,INDICATOR
Possible match (shared part number)
4820-01-373-841745511POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Eaton Aerospace Llc Dba Eaton Aerospace Jackson
6665-01-468-888445511POSSIBLE MATCH
RADIACMETER
Possible match (shared part number)Mirion Technologies (canberra), Inc.
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
45-511
3/2Design control — primary reference
U.S. Government activity
Related Parts
5365-01-191-4516POSSIBLE MATCH
VENT RING
4551-1
6210-01-345-4190POSSIBLE MATCH
LIGHT,INDICATOR
4820-01-373-8417POSSIBLE MATCH
SEAT,VALVE
45511
6665-01-468-8884POSSIBLE MATCH
RADIACMETER
45511
Frequently Asked Questions
What is NSN 4920-01-040-6631?
NSN 4920-01-040-6631 is a Amplifier,quiescent, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
What NSN replaces 4920-01-040-6631?
4 possible matches (shared part number, not a government interchangeability claim): 5365-01-191-4516, 6210-01-345-4190, 4820-01-373-8417. Verify interchangeability with system specifications before substitution.
What are the specifications of 4920-01-040-6631?
Key specifications for 4920-01-040-6631: Part Name Assigned by Controlling Agency: QUIESCENT AMPLIFIER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4920-01-040-6631 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.
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.