# NSN 5305-01-177-1803: Screw, Cap, Socket Head

NSN 5305-01-177-1803 (also written 5305011771803; NIIN 01-177-1803) is a screw, cap, socket head in Federal Supply Class 5305, Screws. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5305-01-177-1803 (5305011771803)
- NIIN: 01-177-1803 (011771803)
- 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 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 |
| --- | --- | --- |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | MILLIMETERS MINIMUM 14.00 AND MILLIMETERS MAXIMUM 16.40 |
| AASB | FASTENER LENGTH | MILLIMETERS MINIMUM 15.60 AND MILLIMETERS MAXIMUM 16.40 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | MILLIMETERS MINIMUM 8.27 AND MILLIMETERS MAXIMUM 8.50 |
| AASU | HEAD HEIGHT | MILLIMETERS MINIMUM 4.86 AND MILLIMETERS MAXIMUM 5.00 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AHYM | NOMINAL THREAD DIAMETER | MILLIMETERS 5.0 |
| ASDB | WIDTH ACROSS FLATS | MILLIMETERS NOMINAL 4.0 |
| CQQR | THREAD PITCH IN MILLIMETERS | 0.80 |
| FEAT | SPECIAL FEATURES | FINISH COLOR BLACK |
| MATT | MATERIAL | OVERALL STEEL |
| SFTT | SURFACE TREATMENT | OVERALL OXIDE |
| THSD | THREAD SERIES DESIGNATOR | M |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| ANSI B18.3.1M B1831CH050016N | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| B1831CH050016N | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-09-17 | $0.87 | 200 | 5TX19 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011771803) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-17 | [SPE4A626V378P](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011771803) | SCREW, CAP, SOCKET HEAD | — | $174.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305011771803&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011771803
- 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/5305-01-177-1803/
JSON: https://nsnexplorer.com/api/nsn/5305-01-177-1803.json