# NSN 5305-00-078-7021: Screw, Cap, Socket Head

NSN 5305-00-078-7021 (also written 5305000787021; NIIN 00-078-7021) is a screw, cap, socket head in Federal Supply Class 5305, Screws. 4 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5305-00-078-7021 (5305000787021)
- NIIN: 00-078-7021 (000787021)
- Item name: SCREW,CAP,SOCKET HEAD
- Federal Supply Class: [FSC 5305 Screws](https://nsnexplorer.com/fsc/5305/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AASK | HEAD STYLE | — |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE AND ZINC AND CHROMATE |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| MATT | MATERIAL | OVERALL STEEL |
| AAUM | LOCKING FEATURE | THREADS PATCH |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MAXIMUM 0.625 |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.452 AND INCHES MAXIMUM 0.507 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.250 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| CRSQ | COUNTERSINK ANGLE | DEGREES MINIMUM 80.0 AND DEGREES MAXIMUM 82.0 |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 0.625 |
| AAJD | THREAD CLASS | 2A |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5305000787021 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 8743903 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 8743911 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| M34AS420R10C | 26233 | NYLOK LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305000787021&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305000787021
- 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/5305-00-078-7021/
JSON: https://nsnexplorer.com/api/nsn/5305-00-078-7021.json