The Viscosimeter,cup Type, cataloged under National Stock Number 6630-00-005-1580, is classified within Federal Supply Class 6630 (Chemical Analysis Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Precision Scientific Petroleum Instruments Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6630-00-005-1580 |
| Primary Part Number | 74965 |
| Item Name | Viscosimeter,cup Type |
| FSC / FSG | 6630 / 66 — Chemical Analysis Instruments |
| Manufacturer | Precision Scientific Petroleum Instruments Co |
| Status | ACTIVE |
| Accessory Components and Quantity | MOTOR: 1/30 HP; THERMOREGULATOR; COOLING COIL; HEATER SENSING ELEMENTS;FLASK SHELF: OPENING 12.375 IN. W.,9.500 IN. D.,5.500 IN. H.,WITH FLASK SUPPORT; CONTROL PANEL WITH LIGHT SWITCH; HEATER SELECTION SWITCH; PILOT LAMPFOUR CHAINED CORKS; PLUNGER; TUBE WRENCH; OIL STRAINER; WITHDRAW TUBE WITH RUBBER BULB; O/A DIM: 13.000 IN. W.,13.000 IN. D.,26.250 IN. H. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9729M10 | Arthur H. Thomas Company (USA) |
| 74965 PRIMARY | Precision Scientific Petroleum Instruments Co (USA) |
| Reference | Meaning |
|---|---|
| 13-565-100 | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
| 52943-350 | 5/9 Secondary reference U.S. Government activity |
| 52943-608 | 5/9 Secondary reference Vwr International Inc Dba Vwr Scientific |
| 179-879 | 5/9 Secondary reference Curtin Matheson Scientific Inc |
NSN 6630-00-005-1580 is a Viscosimeter,cup Type, manufactured by Precision Scientific Petroleum Instruments Co, classified under FSC 6630, Chemical Analysis Instruments. Status: active.
NSN 6630-00-005-1580 has 2 manufacturer part numbers on file: 9729M10 (Arthur H. Thomas Company), 74965 (Precision Scientific Petroleum Instruments Co).
2 possible matches (shared part number, not a government interchangeability claim): 5970-00-391-9753, 5305-00-732-0512. Verify interchangeability with system specifications before substitution.
Key specifications for 74965: Accessory Components and Quantity: MOTOR: 1/30 HP; THERMOREGULATOR; COOLING COIL; HEATER SENSING ELEMENTS;FLASK SHELF: OPENING 12.375 IN. W.,9.500 IN. D.,5.500 IN. H.,WITH FLASK SUPPORT; CONTROL PANEL WITH LIGHT SWITCH; HEATER SELECTION SWITCH; PILOT LAMPFOUR CHAINED CORKS; PLUNGER; TUBE WRENCH; OIL STRAINER; WITHDRAW TUBE WITH RUBBER BULB; O/A DIM: 13.000 IN. W.,13.000 IN. D.,26.250 IN. H. IN. 1 specification is 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.