FSC 1090 — Assemblies Interchangeable Between Weapons in Two or More Classes · FSG 10 — Weapons
Government record, cited
Also searched as1090-01-660-9840 ·
1090016609840 ·
NIIN 016609840 ·
01-660-9840 ·
FSC 1090 Assemblies Interchangeable Between Weapons in Two or More Classes
Nearby stock numbers← 1090-01-656-7711 Parts Kit, Seal Replacement, Artil
·
1090-01-669-2648 Target, Alignment →
Features
Mount,armament Subsystem,helicop — FSC 1090
Identification
NSN: 1090-01-660-9840
NIIN: 016609840
FSC: 1090 — Assemblies Interchangeable Between Weapons in Two or More Classes
FSG: 10 — Weapons
General Description
The Mount,armament Subsystem,helicop, cataloged under National Stock Number 1090-01-660-9840, is classified within Federal Supply Class 1090 (Assemblies Interchangeable Between Weapons in Two or More Classes) of the Weapons group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Mount,armament Subsystem,helicop
FSC / FSG
1090 — Assemblies Interchangeable Between Weapons in Two or More Classes (FSG 10)
Technical Specifications
Parameter
Value
NSN
1090-01-660-9840
Item Name
Mount,armament Subsystem,helicop
FSC / FSG
1090 / 10 — Assemblies Interchangeable Between Weapons in Two or More Classes
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)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
4977009-2
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 1090 — Assemblies Interchangeable Between Weapons in Two or More Classes
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1090-00-003-8369
1090-00-003-8369 · Item name not on file
1090-00-024-9554
1090-00-024-9554 · Item name not on file
1090-00-026-7723
RACK,AMMUNITION STOWAGE
1090-00-034-7788
SNIPERSCOPE
1090-00-039-5034
1090-00-039-5034 · Item name not on file
1090-00-047-4162
1090-00-047-4162 · Item name not on file
1090-00-048-1948
CABLE ASSY,SPECIAL
1090-00-048-1948
CABLE ASSY,SPECIAL
Frequently Asked Questions
What is NSN 1090-01-660-9840?
NSN 1090-01-660-9840 is a Mount,armament Subsystem,helicop, classified under FSC 1090, Assemblies Interchangeable Between Weapons in Two or More Classes. Status: active.
Is NSN 1090-01-660-9840 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 1090-01-660-9840?
NSN 1090-01-660-9840 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.