NSN 1240-01-439-3357 · NIIN 014393357 · Part number 7566421-003
General Dynamics Land Systems Inc. · FSC 1240 — Optical Sighting and Ranging Equipment · FSG 12 — Fire Control Equipment · CAGE 13160
Government record, cited
NSN 1240-01-439-3357 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-439-3357. Manufacturer of record part number: 7566421-003.
Also searched as1240-01-439-3357 ·
1240014393357 ·
NIIN 014393357 ·
01-439-3357 ·
FSC 1240 Optical Sighting and Ranging Equipment · CAGE 13160 · 7566421-003
Manufacturer of record: General Dynamics Land Systems Inc.
Identification
NSN: 1240-01-439-3357
NIIN: 014393357
FSC: 1240 — Optical Sighting and Ranging Equipment
FSG: 12 — Fire Control Equipment
Primary part number: 7566421-003
Manufacturer: General Dynamics Land Systems Inc.
General Description
The Mount Subassembly, cataloged under National Stock Number 1240-01-439-3357, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is General Dynamics Land Systems Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1240-01-439-3357
Primary Part Number
7566421-003
Item Name
Mount Subassembly
FSC / FSG
1240 / 12 — Optical Sighting and Ranging Equipment
Other items in FSC 1240 — Optical Sighting and Ranging Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1240-00-000-0160
SIGHT UNIT
1240-00-001-4014
1240-00-001-4014 · Item name not on file
1240-00-001-4015
1240-00-001-4015 · Item name not on file
1240-00-001-4488
FILTER,LIGHT,OPTICAL INSTRUMENT
1240-00-003-1076
1240-00-003-1076 · Item name not on file
1240-00-003-8404
1240-00-003-8404 · Item name not on file
1240-00-003-8405
1240-00-003-8405 · Item name not on file
1240-00-003-8406
MOUNT,TELESCOPE
Frequently Asked Questions
What is NSN 1240-01-439-3357?
NSN 1240-01-439-3357 is a Mount Subassembly, manufactured by General Dynamics Land Systems Inc., classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
What part numbers are listed for NSN 1240-01-439-3357?
NSN 1240-01-439-3357 has 1 manufacturer part number on file: 7566421-003 (General Dynamics Land Systems Inc.).
What are the specifications of 7566421-003?
Key specifications for 7566421-003: Special Features: ARM, DUAL. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1240-01-439-3357 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.