The Flask,distilling, cataloged under National Stock Number 6640-00-290-6786, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-00-290-6786 |
| Item Name | Flask,distilling |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Status | ACTIVE |
| Closure Type Accommodated and Size Designation | NO.4 STANDARD STOPPER MOUTH |
| Angle | 75.0 DEGREES |
| Style Designator | LONG NECK W/SIDE ARM ROUND BOTTOM |
| Capacity Rating | 500.000 MILLILITERS NOMINAL |
| Nondefinitive Spec/std Data | C TYPE |
| Distance From Top to Side Arm Centerline | 77.00 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| DDF250TYPEC | 4/1 Identification reference U.S. Government activity |
| 35-490 | 5/1 Secondary reference U.S. Government activity |
NSN 6640-00-290-6786 is a Flask,distilling, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5950-00-648-5619, 5998-01-022-7122, 4720-01-244-2437. Verify interchangeability with system specifications before substitution.
Key specifications for 6640-00-290-6786: Closure Type Accommodated and Size Designation: NO.4 STANDARD STOPPER MOUTH; Angle: 75.0 DEGREES; Style Designator: LONG NECK W/SIDE ARM ROUND BOTTOM; Capacity Rating: 500.000 MILLILITERS NOMINAL. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.