The Counter,reciprocating, cataloged under National Stock Number 6680-00-641-3205, 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 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6680-00-641-3205 |
| Item Name | Counter,reciprocating |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Status | ACTIVE |
| Numeral Display Method | DRUM |
| Register Quantity | 1 |
| Register Function | UNABLE TO DECODE |
| Overall Diameter | 1.812 INCHES NOMINAL IN |
| Figure Quantity Per Register | UNABLE TO DECODE |
| Style Designator | HAND HELD ROUND |
| Actuating Device Location | TOP CENTER SINGLE REGISTER SINGLE TIER |
| Figure Height | UNABLE TO DECODE |
| Nondefinitive Spec/std Data | II TYPE |
| Color | WHITE SECOND TEMP COEFFICIENT |
| Color | BLACK THIRD TEMP COEFFICIENT |
| Mounting Type for Which Designed | UNABLE TO DECODE |
| Register Reset Method | UNABLE TO DECODE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| GG-C-00620 | 4/1 Identification reference U.S. Government activity |
NSN 6680-00-641-3205 is a Counter,reciprocating, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6680-00-641-3206. Verify interchangeability with system specifications before substitution.
Key specifications for 6680-00-641-3205: Numeral Display Method: DRUM; Register Quantity: 1; Register Function: UNABLE TO DECODE; Overall Diameter: 1.812 INCHES NOMINAL IN. 13 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.