# NSN 6630-01-550-4493: Hydrometer, Petroleum

NSN 6630-01-550-4493 (also written 6630015504493; NIIN 01-550-4493) is a hydrometer, petroleum in Federal Supply Class 6630, Chemical Analysis Instruments. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 6630-01-550-4493 (6630015504493)
- NIIN: 01-550-4493 (015504493)
- Item name: HYDROMETER,PETROLEUM
- Federal Supply Class: [FSC 6630 Chemical Analysis Instruments](https://nsnexplorer.com/fsc/6630/)
- Federal Supply Group: [FSG 66](https://nsnexplorer.com/group/66/)
- Acquisition method suffix code: AMSC Z: a commercial, nondevelopmental or off-the-shelf item. (observed 2026-11-01)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | HYDROMETER GRADUATE ASTM PETROLEUM HYDROMETER PLAIN FORM ASTM 4H API RANGE 29 DEG TO 41 DEG |
| FEAT | SPECIAL FEATURES | API ASTM PETROLEUM HYDROMETER, PLAIN FORM, MEETS OR EXCEEDS ASTM E 100 SPECIFICATIONS; PERMANENTLY MARKED W/INDIVIDUAL SERIAL NUMBERS AND CALIBRATED ACCORDING TO ASTM E 126 SPECIFICATIONS API RANGE: 29 DEG TO 41 DEG, 0.1 DIV; ASTM NO. 4H; LENGTH: 330MM (33 CM OR 0.3MM); TEMPERATURE OF STANDARDIZATION: 60 DEG F |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 11-603B | 22527 | FISHER SCIENTIFIC COMPANY L.L.C. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| ASTM 4H | 22527 | FISHER SCIENTIFIC COMPANY L.L.C. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-29 | [SPE2DH27V0269](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6630015504493) | HYDROMETER, PETROLEUM | PACIFIC STAR CORPORATION | $35.15 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6630015504493&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6630015504493
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

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