# NSN 5305-00-500-1791: Screw, Cap, Socket Head

NSN 5305-00-500-1791 (also written 5305005001791; NIIN 00-500-1791) is a screw, cap, socket head in Federal Supply Class 5305, Screws. 7 manufacturer part numbers from 4 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5305-00-500-1791 (5305005001791)
- NIIN: 00-500-1791 (005001791)
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.360 AND INCHES MAXIMUM 0.380 |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.542 AND INCHES MAXIMUM 0.562 |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 25.0 AND ROCKWELL C MAXIMUM 31.0 |
| MATT | MATERIAL | FASTENER NICKEL ALLOY |
| AASB | FASTENER LENGTH | INCHES MINIMUM 1.734 AND INCHES MAXIMUM 1.781 |
| ASDB | WIDTH ACROSS FLATS | INCHES NOMINAL 0.312 |
| MATT | MATERIAL | LOCKING FEATURE PLASTIC POLYAMIDE NYLON |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.375 |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 1.234 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FASTENER FED SPEC SINGLE MATERIAL RESPONSE QQ-N-286 |
| AASK | HEAD STYLE | — |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | LOCKING FEATURE MIL SPEC SINGLE MATERIAL RESPONSE -IL-F-18240 |
| AAUM | LOCKING FEATURE | THREADS PATCH |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 52840PC10 | 0SYN4 | WARTSILA LIPS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 52840PC10 | 77842 | EATON CORPORATION DBA EATON INOAC DIV EATON | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 52867 | 0EYA6 | DEFENSE MARITIME SOLUTIONS, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 52867 | 0SYN4 | WARTSILA LIPS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 52867 | 66200 | PIONEER INDUSTRIES, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 52867 | 77842 | EATON CORPORATION DBA EATON INOAC DIV EATON | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| A52867 | 77842 | EATON CORPORATION DBA EATON INOAC DIV EATON | [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=5305005001791&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305005001791
- 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/5305-00-500-1791/
JSON: https://nsnexplorer.com/api/nsn/5305-00-500-1791.json