# NSN 5305-01-574-4451: Screw, Assembled Washer

NSN 5305-01-574-4451 (also written 5305015744451; NIIN 01-574-4451) is a screw, assembled washer in Federal Supply Class 5305, Screws. 2 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5305-01-574-4451 (5305015744451)
- NIIN: 01-574-4451 (015744451)
- Item name: SCREW,ASSEMBLED WASHER
- 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 L: annual buy value is below the screening threshold. (observed 2026-11-08)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 72000 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL B NOMINAL 80.0 |
| CTHW | PRIMARY WASHER STYLE | — |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX WASHER HEAD SLOTTED |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.250 |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES NOMINAL 0.625 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 0.625 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES NOMINAL 0.375 |
| AASU | HEAD HEIGHT | INCHES NOMINAL 0.240 |
| AAVW | WASHER QUANTITY | 1 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AGAV | END ITEM IDENTIFICATION | 4520-01-566-6669, HEATER,WATER 400,00 |
| MATT | MATERIAL | OVERALL STEEL PROPERTY CLASS 18.8 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 90316A538 | 39428 | MCMASTER-CARR SUPPLY CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 90316A538 | 97852 | STAR STAINLESS SCREW CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-9759 | 1 | 2026-11-13 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305015744451&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305015744451&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305015744451
- 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/5305-01-574-4451/
JSON: https://nsnexplorer.com/api/nsn/5305-01-574-4451.json