NSN 6650-01-285-9645 · NIIN 012859645 · Part number 5525591
Naval Sea Systems Command · FSC 6650 — Optical Instruments, Test Equipment, Components and Accessories · FSG 66 — Instruments and Laboratory Equipment · CAGE 53711
Government record, cited
NSN 6650-01-285-9645 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-285-9645. Manufacturer of record part number: 5525591.
Also searched as6650-01-285-9645 ·
6650012859645 ·
NIIN 012859645 ·
01-285-9645 ·
FSC 6650 Optical Instruments, Test Equipment, Components and Accessories · CAGE 53711 · 5525591
General Characteristics Item Description: STEEL; 2.500 IN. DEPTH; 1.849 IN. DIA; 125 MICROINCH SURFACE FINISH IN
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 6650-01-285-9645
NIIN: 012859645
FSC: 6650 — Optical Instruments, Test Equipment, Components and Accessories
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 5525591
Manufacturer: Naval Sea Systems Command
General Description
The Adapter,borescope, cataloged under National Stock Number 6650-01-285-9645, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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
6650-01-285-9645
Primary Part Number
5525591
Item Name
Adapter,borescope
FSC / FSG
6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
General Characteristics Item Description
STEEL; 2.500 IN. DEPTH; 1.849 IN. DIA; 125 MICROINCH SURFACE FINISH IN
Other items in FSC 6650 — Optical Instruments, Test Equipment, Components and Accessories
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6650-00-000-0164
6650-00-000-0164 · Item name not on file
6650-00-001-2319
ARM,SHUTTER,SPECTROMETER
6650-00-001-2322
PLATE,MOUNTING,SPECTROMETER LAMP
6650-00-001-2323
LENS,OPTICAL INSTRUMENT
6650-00-001-2324
PLATE,SPECTROMETER DOOR
6650-00-001-2326
NOZZLE,AIR,SPECTROMETER
6650-00-001-2327
PLATE,LEFT,SPECTROMETER
6650-00-001-2328
6650-00-001-2328 · Item name not on file
Frequently Asked Questions
What is NSN 6650-01-285-9645?
NSN 6650-01-285-9645 is a Adapter,borescope, manufactured by Naval Sea Systems Command, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
What part numbers are listed for NSN 6650-01-285-9645?
NSN 6650-01-285-9645 has 1 manufacturer part number on file: 5525591 (Naval Sea Systems Command).
What are the specifications of 5525591?
Key specifications for 5525591: General Characteristics Item Description: STEEL; 2.500 IN. DEPTH; 1.849 IN. DIA; 125 MICROINCH SURFACE FINISH IN; End Item Identification: GUN MOUNT,MK-75. 1 specification is documented in the U.S. Government catalog.
Is NSN 6650-01-285-9645 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.