FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment
Government record, cited
Also searched as6680-01-321-6543 ·
6680013216543 ·
NIIN 013216543 ·
01-321-6543 ·
FSC 6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Glass,liquid Sight Indicator,fla, cataloged under National Stock Number 6680-01-321-6543, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6680-01-321-6543
Item Name
Glass,liquid Sight Indicator,fla
FSC / FSG
6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Status
ACTIVE
Design Type
PLAIN
Overall Diameter
91.0 MILLIMETERS MAXIMUM MM
Overall Thickness
5.0 MILLIMETERS MAXIMUM MM
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
0001-0054-820
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6680-00-000-0189
TRANSMITTER,LIQUID QUANTITY
6680-00-001-1478
GAGE ROD-CAP,LIQUID LEVEL
6680-00-001-1502
6680-00-001-1502 · Item name not on file
6680-00-001-1506
6680-00-001-1506 · Item name not on file
6680-00-001-1511
GAGE ROD,LIQUID LEVEL
6680-00-001-3672
COUNTER,ROTATING
6680-00-001-3675
INDICATOR,SIGHT,LIQUID
6680-00-001-4170
COUNTER,ROTATING
Frequently Asked Questions
What is NSN 6680-01-321-6543?
NSN 6680-01-321-6543 is a Glass,liquid Sight Indicator,fla, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
What are the specifications of 6680-01-321-6543?
Key specifications for 6680-01-321-6543: Design Type: PLAIN; Overall Diameter: 91.0 MILLIMETERS MAXIMUM MM; Overall Thickness: 5.0 MILLIMETERS MAXIMUM MM. 3 specifications are documented in the U.S. Government catalog.
Is NSN 6680-01-321-6543 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.