# NSN 5305-01-721-8947: Screw, Cap, Socket Head

NSN 5305-01-721-8947 (also written 5305017218947; NIIN 01-721-8947) is a screw, cap, socket head in Federal Supply Class 5305, Screws. 5 manufacturer part numbers from 4 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5305-01-721-8947 (5305017218947)
- NIIN: 01-721-8947 (017218947)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES NOMINAL 1.000 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 4.75 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.365 AND INCHES MAXIMUM 0.375 |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.244 AND INCHES MAXIMUM 0.250 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AGAV | END ITEM IDENTIFICATION | AIRCRAFT KC-46 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.2500 |
| ASDB | WIDTH ACROSS FLATS | INCHES MINIMUM 0.1875 AND INCHES MAXIMUM 0.1900 |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CSYT | CHAMFER ANGLE | DEGREES MINIMUM 30.0 AND DEGREES MAXIMUM 45.0 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,SOCKET HEAD,ALLOY STEEL AND A286,NON LOCKING AND SELF-LOCKING,FINE THREAD |
| MATT | MATERIAL | OVERALL STEEL COMP 4340 OR STEEL COMP 8740 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL AEROSPACE MATERIAL SPEC STD 1ST MATERIAL RESPONSE A-S 6415 OR 6484 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-6049 OR AEROSPACE MATERIAL SPEC STD 2ND MATERIAL RESPONSE A-S 6322 |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE A-S-QQ--416,TYE II,CLASS 2 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| ZZZK | SPECIFICATION/STANDARD DATA | MANUFACTURERS STANDARD 81205-BACS12HL |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ITEM IS FAA CERTIFIED |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| BACS12HL | 81205 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BACS12HL4-76 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BACS12HL4-76 | 1ER65 | 3-V FASTENER CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BACS12HL4-76 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BACS12HL4-76 | 81205 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-4336 | 3 | 2026-10-22 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305017218947&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305017218947&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305017218947
- 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/5305-01-721-8947/
JSON: https://nsnexplorer.com/api/nsn/5305-01-721-8947.json