The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-305-4033, 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 Rtx Corporation Div Pratt & Whitney. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-305-4033 |
| Primary Part Number | 4100521 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Furnished Data | LIQUID LEVEL |
| Style Designator | BULLS EYE, HI-TEMP/HIGH PRESSURE |
| Sight Diameter | 5.000 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 | X |
| Part Number | Manufacturer |
|---|---|
| 4100521 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
NSN 6680-01-305-4033 is a Indicator,sight,liquid, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-305-4033 has 1 manufacturer part number on file: 4100521 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4100521: Furnished Data: LIQUID LEVEL; Style Designator: BULLS EYE, HI-TEMP/HIGH PRESSURE; Sight Diameter: 5.000 INCHES NOMINAL IN. 3 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.