The Counter,reciprocating, cataloged under National Stock Number 6680-01-251-8399, 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 Dynapar Corp Div Specialty Product Technologies. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-251-8399 |
| Primary Part Number | 166726-012 |
| Item Name | Counter,reciprocating |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Dynapar Corp Div Specialty Product Technologies |
| Status | ACTIVE |
| Numeral Display Method | DRUM |
| Register Quantity | 1 |
| Mounting Facility Type and Quantity | 4 SLOT |
| Mounting Arrangement Style | FOUR POSITION SQUARE/RECTANGLE |
| Shaft Diameter | 0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Figure Quantity Per Register | UNABLE TO DECODE |
| Style Designator | SQUARE/RECTANGULAR CASED |
| Longest Vertical Distance Between Mounting Centers | 2.850 INCHES MINIMUM AND 2.870 INCHES MAXIMUM IN |
| Actuating Device Location | LEFT SIDE SINGLE REGISTER SINGLE TIER |
| Figure Height | UNABLE TO DECODE |
| Shaft Length | 1.190 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Maximum Count Rate | UNABLE TO DECODE |
| Minimum Angle Throw in Deg Per Count | UNABLE TO DECODE |
| Mounting Type for Which Designed | UNABLE TO DECODE |
| Longest Horizontal Distance Between Mounting Centers | 3.200 INCHES MINIMUM AND 3.220 INCHES MAXIMUM 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 |
|---|---|
| 166726-012 PRIMARY | Dynapar Corp Div Specialty Product Technologies (USA) |
| Reference | Meaning |
|---|---|
| 166726-011 | 5/9 Secondary reference Dynapar Corp Div Specialty Product Technologies |
| 6680PL1946497 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 142D6613 | 5/9 Secondary reference Dynapar Corp Div Specialty Product Technologies |
| 142D6613 | D/9 Drawing number reference only General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
NSN 6680-01-251-8399 is a Counter,reciprocating, manufactured by Dynapar Corp Div Specialty Product Technologies, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-251-8399 has 1 manufacturer part number on file: 166726-012 (Dynapar Corp Div Specialty Product Technologies).
Key specifications for 166726-012: Numeral Display Method: DRUM; Register Quantity: 1; Mounting Facility Type and Quantity: 4 SLOT; Overall Height: 2.292 INCHES MINIMUM AND 2.332 INCHES MAXIMUM IN. 15 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 6680-01-251-8399 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.