The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-021-2479, 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 Bijur Lubricating Corp. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-021-2479 |
| Primary Part Number | B5145 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Bijur Lubricating Corp |
| Status | ACTIVE |
| Furnished Data | LIQUID LEVEL |
| Data Furnishing Method | CLEAR WINDOW |
| End Connection Type | UNABLE TO DECODE |
| Criticality Code Justification | FEAT |
| Style Designator | TANK PATTERN, FLANGED |
| Features Provided | REFLECTOR |
| Surface Treatment | CHROMIUM |
| Media for Which Designed | ANY ACCEPTABLE |
| Material | COPPER ALLOY |
| Flange Outside Diameter | 1.500 INCHES NOMINAL IN |
| Sight Diameter | 1.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| B5145 PRIMARY | Bijur Lubricating Corp (USA) |
| Reference | Meaning |
|---|---|
| 204007 | 5/9 Secondary reference Sargent-Welch Scientific Co Lammert Pump |
NSN 6680-01-021-2479 is a Indicator,sight,liquid, manufactured by Bijur Lubricating Corp, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-021-2479 has 1 manufacturer part number on file: B5145 (Bijur Lubricating Corp).
1 possible match (shared part number, not a government interchangeability claim): 6240-01-332-2887. Verify interchangeability with system specifications before substitution.
Key specifications for B5145: Overall Height: 0.375 INCHES NOMINAL IN; Furnished Data: LIQUID LEVEL; Data Furnishing Method: CLEAR WINDOW; End Connection Type: UNABLE TO DECODE. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.