NSN 6680-01-331-5635 · NIIN 013315635 · Part number 25303
Masport Incorporated · FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 0LWR7
Government record, cited
NSN 6680-01-331-5635 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-331-5635. Manufacturer of record part number: 25303.
Also searched as6680-01-331-5635 ·
6680013315635 ·
NIIN 013315635 ·
01-331-5635 ·
FSC 6680 Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments · CAGE 0LWR7 · 25303
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 25303
Manufacturer: Masport Incorporated
General Description
The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-331-5635, 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. The manufacturer of record is Masport Incorporated. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6680-01-331-5635
Primary Part Number
25303
Item Name
Indicator,sight,liquid
FSC / FSG
6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Manufacturer
Masport Incorporated
Status
ACTIVE
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
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5935-01-398-7102103653-1POSSIBLE MATCH
CONNECTOR,PLUG,ELECTRICAL
Possible match (shared part number)Te Connectivity Corporation
NSN 6680-01-331-5635 is a Indicator,sight,liquid, manufactured by Masport Incorporated, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
What part numbers are listed for NSN 6680-01-331-5635?
NSN 6680-01-331-5635 has 1 manufacturer part number on file: 25303 (Masport Incorporated).
What NSN replaces 6680-01-331-5635?
5 possible matches (shared part number, not a government interchangeability claim): 5935-01-398-7102, 8470-01-506-6851, 8470-01-506-6855. Verify interchangeability with system specifications before substitution.
What are the specifications of 25303?
Key specifications for 25303: End Item Identification: VACUUM PUMP; FSCM 03950. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6680-01-331-5635 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.