NSN 1020-01-185-4409 · NIIN 011854409 · Part number 2527675
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · FSC 1020 — Guns, Over 125mm Through 150mm · FSG 10 — Weapons · CAGE 10001
Government record, cited
NSN 1020-01-185-4409 — this item is cataloged by the U.S. Government under National Stock Number 1020-01-185-4409. Manufacturer of record part number: 2527675.
Also searched as1020-01-185-4409 ·
1020011854409 ·
NIIN 011854409 ·
01-185-4409 ·
FSC 1020 Guns, Over 125mm Through 150mm · CAGE 10001 · 2527675
General Characteristics Item Description: STEEL 1042; WITH 2 HOLES 0.250-28 UNF-3B; 7.375 IN. DISTANCE FROM C TO C OF BOLT HOLES; 9.500 IN. APPROXIMATE O/A LG; 1.955 IN. O/A W IN
2 manufacturer part numbers on file
Manufacturer of record: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Identification
NSN: 1020-01-185-4409
NIIN: 011854409
FSC: 1020 — Guns, Over 125mm Through 150mm
FSG: 10 — Weapons
Primary part number: 2527675
Manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
General Description
The Breech Block, cataloged under National Stock Number 1020-01-185-4409, is classified within Federal Supply Class 1020 (Guns, Over 125mm Through 150mm) of the Weapons group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1020-01-185-4409
Primary Part Number
2527675
Item Name
Breech Block
FSC / FSG
1020 / 10 — Guns, Over 125mm Through 150mm
Manufacturer
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Status
ACTIVE
General Characteristics Item Description
STEEL 1042; WITH 2 HOLES 0.250-28 UNF-3B; 7.375 IN. DISTANCE FROM C TO C OF BOLT HOLES; 9.500 IN. APPROXIMATE O/A LG; 1.955 IN. O/A W IN
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
No interchangeability data on file.
Other items in FSC 1020 — Guns, Over 125mm Through 150mm
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1020-00-008-5177
EJECTOR,CARTRIDGE
1020-00-008-5178
EJECTOR,CARTRIDGE
1020-00-008-5179
EJECTOR
1020-00-008-5181
PISTON
1020-00-008-5187
PLUNGER,VALVE
1020-00-008-5188
ACTUATOR,SWITCHETTE
1020-00-008-5188
ACTUATOR,SWITCHETTE
1020-00-008-5190
EJECTOR,CARTRIDGE
Frequently Asked Questions
What is NSN 1020-01-185-4409?
NSN 1020-01-185-4409 is a Breech Block, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1020, Guns, Over 125mm Through 150mm. Status: active.
What part numbers are listed for NSN 1020-01-185-4409?
NSN 1020-01-185-4409 has 2 manufacturer part numbers on file: 2527675 (Bae Systems Land & Armaments L.p.), 2527675 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
What are the specifications of 2527675?
Key specifications for 2527675: General Characteristics Item Description: STEEL 1042; WITH 2 HOLES 0.250-28 UNF-3B; 7.375 IN. DISTANCE FROM C TO C OF BOLT HOLES; 9.500 IN. APPROXIMATE O/A LG; 1.955 IN. O/A W IN; End Item Identification: FMC GUN MNT 5/54. 1 specification is documented in the U.S. Government catalog.
Is NSN 1020-01-185-4409 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 1020-01-185-4409?
NSN 1020-01-185-4409 has DEMIL Code D. 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.