The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-199-0128, 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 Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6680-00-199-0128 |
| Primary Part Number | 171692 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| End Connection Type | UNABLE TO DECODE |
| Style Designator | BULLS EYE |
| Thread Direction | UNABLE TO DECODE |
| Nominal Thread Size | UNABLE TO DECODE |
| Media for Which Designed | HYDRAULIC FLUID |
| Thread Class | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY |
| Thread Series Designator | UNABLE TO DECODE |
| Sight Diameter | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 171692 | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
| Reference | Meaning |
|---|---|
| S1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6680-00-199-0128 is a Indicator,sight,liquid, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-199-0128 has 1 manufacturer part number on file: 171692 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
1 possible match (shared part number, not a government interchangeability claim): 5815-00-897-9520. Verify interchangeability with system specifications before substitution.
Key specifications for 171692: Overall Height: 0.680 INCHES NOMINAL IN; Width Across Flats: 0.625 INCHES NOMINAL IN; End Connection Type: UNABLE TO DECODE; Style Designator: BULLS EYE. 10 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.
NSN 6680-00-199-0128 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.