# NSN 5305-01-399-3101: Screw, Shoulder

NSN 5305-01-399-3101 (also written 5305013993101; NIIN 01-399-3101) is a screw, shoulder in Federal Supply Class 5305, Screws. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5305-01-399-3101 (5305013993101)
- NIIN: 01-399-3101 (013993101)
- Item name: SCREW,SHOULDER
- 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 |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES NOMINAL 0.403 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 0.638 AND INCHES MAXIMUM 0.668 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES MINIMUM 0.3504 AND INCHES MAXIMUM 0.3998 |
| AATN | SHOULDER DIAMETER | FIRST SHOULDER INCHES MINIMUM 0.2641 AND INCHES MAXIMUM 0.2651 |
| AATX | SHOULDER LENGTH | FIRST SHOULDER INCHES MINIMUM 0.240 AND INCHES MAXIMUM 0.260 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.250 |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | DEGREES MINIMUM 99.0 AND DEGREES MAXIMUM 101.0 |
| CWYB | SHOULDER SHAPE | FIRST SHOULDER ROUND |
| MATT | MATERIAL | OVERALL STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5626 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-6049 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416 TY 2 CL2 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| ZZZK | SPECIFICATION/STANDARD DATA | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS1581 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| NAS1581A4T4X | 5M696 | UFC AEROSPACE CORP. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NAS1581F4T4X | 5M696 | UFC AEROSPACE CORP. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NAS1581F4T4X | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-29 | [SPE4A626PEEE7](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305013993101) | SCREW, SHOULDER | APOLLO AEROSPACE COMPONENTS LLC | $2,579.58 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305013993101&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305013993101
- 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/5305-01-399-3101/
JSON: https://nsnexplorer.com/api/nsn/5305-01-399-3101.json