# NSN 5306-00-638-4949: Bolt, Externally Relieved Body

NSN 5306-00-638-4949 (also written 5306006384949; NIIN 00-638-4949) is a bolt, externally relieved body in Federal Supply Class 5306, Bolts. 4 manufacturer part numbers from 4 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5306-00-638-4949 (5306006384949)
- NIIN: 00-638-4949 (006384949)
- Item name: BOLT,EXTERNALLY RELIEVED BODY
- Federal Supply Class: [FSC 5306 Bolts](https://nsnexplorer.com/fsc/5306/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-28)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.553 AND INCHES MAXIMUM 0.565 |
| AAWC | FIRST DIAMETER FROM HEAD | INCHES MINIMUM 0.393 AND INCHES MAXIMUM 0.394 |
| AAWD | SECOND DIAMETER FROM HEAD | INCHES NOMINAL 0.309 |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | INCHES NOMINAL 1.781 |
| AAWJ | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | INCHES NOMINAL 1.864 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 2.406 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES NOMINAL 0.219 |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 0.083 |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 123000 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 36.0 AND ROCKWELL C MAXIMUM 40.0 |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 2 |
| MATT | MATERIAL | OVERALL STEEL COMP 440C |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.375 |
| CMLP | THREAD QUANTITY PER INCH | 24 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 6739873 | 17328 | UNITED PRECISION PRODUCTS CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6739873 | 24617 | GENERAL MOTORS CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6739873 | 63005 | ROLLS-ROYCE CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6739873 | 73342 | ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-7010 | 15 | 2026-11-09 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306006384949&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306006384949&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306006384949
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/5306-00-638-4949/
JSON: https://nsnexplorer.com/api/nsn/5306-00-638-4949.json