# NSN 9135-01-644-2502: Propellant Pressurizing Agent, He

NSN 9135-01-644-2502 (also written 9135016442502; NIIN 01-644-2502) is a propellant pressurizing agent, he in Federal Supply Class 9135, Liquid Propellant Fuels and Oxidizers, Chemical Base. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 9135-01-644-2502 (9135016442502)
- NIIN: 01-644-2502 (016442502)
- Item name: PROPELLANT PRESSURIZING AGENT,HE
- Federal Supply Class: [FSC 9135 Liquid Propellant Fuels and Oxidizers, Chemical Base](https://nsnexplorer.com/fsc/9135/)
- Federal Supply Group: [FSG 91](https://nsnexplorer.com/group/91/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ALQG | CONTAINER TYPE | CYLINDER |
| BBRC | COMPOSITION AND PERCENTAGE | MINIMUM BY VOLUME HELIUM 99.995 |
| CWAY | SUPPLY CLASSIFICATION | BULK |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| M27407-1A BULK | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-PRF-27407 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-09 | [SPE60123D1511/SPE60127FL29E](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=9135016442502) | PROPELLANT PRESSURIZING AGENT, HELIUM | AIR PRODUCTS AND CHEMICALS, INC DBA AIR PRODUCTS AND CHEMICALS INC | $93,767.40 |
| 2026-10-01 | [SPE60122D1508/SPE60127FL25U](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=9135016442502) | PROPELLANT PRESSURIZING AGENT, HELIUM | — | $85,734.00 |
| 2026-09-28 | [SPE60122D1508/SPE60125FJ29L](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=9135016442502) | PROPELLANT PRESSURIZING AGENT, HELIUM | — | $66,515.58 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=9135016442502&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=9135016442502
- 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.

Canonical page: https://nsnexplorer.com/nsn/9135-01-644-2502/
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