The Test Tube,comparison, cataloged under National Stock Number 6640-01-112-5049, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6640-01-112-5049 |
| Item Name | Test Tube,comparison |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Status | ACTIVE |
| Style Designator | PLAIN RIM FLAT BOTTOM |
| Overall Outside Diameter | 18.00 MILLIMETERS NOMINAL MM |
| Primary Container Type | BOX |
| Calibration Function | TO CONTAIN |
| Unable to Decode | UNABLE TO DECODE |
| Material | GLASS BOROSILICATE |
| Primary Container Unit Quantity | 1 |
| 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 |
|---|---|
| 1798-00 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6640-01-112-5049 is a Test Tube,comparison, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-363-4120. Verify interchangeability with system specifications before substitution.
Key specifications for 6640-01-112-5049: Style Designator: PLAIN RIM FLAT BOTTOM; Overall Length: 100.00 MILLIMETERS NOMINAL MM; Overall Outside Diameter: 18.00 MILLIMETERS NOMINAL MM; Primary Container Type: BOX. 7 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.