FSC Application Data: TEST SET,ELECTRONIC EQUIPMENT
Internal Flange Thickness: 0.036 INCHES NOMINAL IN
Outside Diameter: 3.322 INCHES NOMINAL IN
Material: STEEL
Identification
NSN: 6650-00-545-8056
NIIN: 005458056
FSC: 6650 — Optical Instruments, Test Equipment, Components and Accessories
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Ring,retaining,optical Element, cataloged under National Stock Number 6650-00-545-8056, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6650-00-545-8056
Item Name
Ring,retaining,optical Element
FSC / FSG
6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories
Status
ACTIVE
FSC Application Data
TEST SET,ELECTRONIC EQUIPMENT
Internal Flange Thickness
0.036 INCHES NOMINAL IN
Outside Diameter
3.322 INCHES NOMINAL IN
Material
STEEL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
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
SC-B-91481
5/9Secondary reference
O K Tooling Co
SC-B-91481
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
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 6650-00-545-8056?
NSN 6650-00-545-8056 is a Ring,retaining,optical Element, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
What are the specifications of 6650-00-545-8056?
Key specifications for 6650-00-545-8056: FSC Application Data: TEST SET,ELECTRONIC EQUIPMENT; Internal Flange Thickness: 0.036 INCHES NOMINAL IN; Outside Diameter: 3.322 INCHES NOMINAL IN; Material: STEEL. 4 specifications are documented in the U.S. Government catalog.
Is NSN 6650-00-545-8056 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.