NSN 1650-00-077-1978 · NIIN 000771978 · Part number 16423
Moog Military Aircraft Llc · FSC 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components · FSG 16 — Aircraft Components and Accessories · CAGE 9P5N5
Government record, cited
NSN 1650-00-077-1978 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-077-1978. Manufacturer of record part number: 16423.
Also searched as1650-00-077-1978 ·
1650000771978 ·
NIIN 000771978 ·
00-077-1978 ·
FSC 1650 Aircraft Hydraulic, Vacuum, and De-icing System Components · CAGE 9P5N5 · 16423
Nearby stock numbers← 1650-00-077-1977 Head, Linear Actuating Cylinder
·
1650-00-077-1979 Connector Link Asse →
Features
Key,locknut — FSC 1650
1 manufacturer part number on file
Manufacturer of record: Moog Military Aircraft Llc
Identification
NSN: 1650-00-077-1978
NIIN: 000771978
FSC: 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: 16423
Manufacturer: Moog Military Aircraft Llc
General Description
The Key,locknut, cataloged under National Stock Number 1650-00-077-1978, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Moog Military Aircraft Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Key,locknut
FSC / FSG
1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components (FSG 16)
Manufacturers
Moog Military Aircraft Llc (CAGE 9P5N5)
Technical Specifications
Parameter
Value
NSN
1650-00-077-1978
Primary Part Number
16423
Item Name
Key,locknut
FSC / FSG
1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components
Manufacturer
Moog Military Aircraft Llc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-00-423-389316423POSSIBLE MATCH
SEAT,HELICAL COMPRESSION SPRING
Possible match (shared part number)Prestolite Electric Inc
5330-00-435-858716-423POSSIBLE MATCH
5330-00-435-8587 · Item name not on file
Possible match (shared part number)Rix Industries
5905-00-880-3702505428-1POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,PRE
Possible match (shared part number)Raytheon Company Dba Raytheon
5950-01-012-468016423POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
2930-01-092-864316423POSSIBLE MATCH
PUMP,COOLING SYSTEM,ENGINE
Possible match (shared part number)Westerbeke Corporation
5940-01-241-1058860697-0014POSSIBLE MATCH
POST,BINDING,ELECTRICAL
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6515-01-591-434105.002.003SPOSSIBLE MATCH
BLADE,BONE SAW,POWER
Possible match (shared part number)Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5330-01-630-018216-423POSSIBLE MATCH
SEAL,PLAIN
Possible match (shared part number)Metrex Valve Corp. Dba Metrex Valve Corp
Moog Inc Div Moog Inc., Space and Defense - Salt Lake City
16423
5/9Secondary reference
U.S. Government activity
Related Parts
5340-00-423-3893POSSIBLE MATCH
SEAT,HELICAL COMPRESSION SPRING
16423
5330-00-435-8587POSSIBLE MATCH
5330-00-435-8587 · Item name not on file
16-423
5905-00-880-3702POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,PRE
505428-1
5950-01-012-4680POSSIBLE MATCH
TRANSFORMER,POWER
16423
2930-01-092-8643POSSIBLE MATCH
PUMP,COOLING SYSTEM,ENGINE
16423
5940-01-241-1058POSSIBLE MATCH
POST,BINDING,ELECTRICAL
860697-0014
6515-01-591-4341POSSIBLE MATCH
BLADE,BONE SAW,POWER
05.002.003S
5330-01-630-0182POSSIBLE MATCH
SEAL,PLAIN
16-423
Frequently Asked Questions
What is NSN 1650-00-077-1978?
NSN 1650-00-077-1978 is a Key,locknut, manufactured by Moog Military Aircraft Llc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
What part numbers are listed for NSN 1650-00-077-1978?
NSN 1650-00-077-1978 has 1 manufacturer part number on file: 16423 (Moog Military Aircraft Llc).
What NSN replaces 1650-00-077-1978?
8 possible matches (shared part number, not a government interchangeability claim): 5340-00-423-3893, 5330-00-435-8587, 5905-00-880-3702. Verify interchangeability with system specifications before substitution.
Is NSN 1650-00-077-1978 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 1650-00-077-1978?
NSN 1650-00-077-1978 has DEMIL Code Q. 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.