# NSN 5310-01-281-3405: Washer, Shouldered

NSN 5310-01-281-3405 (also written 5310012813405; NIIN 01-281-3405) is a washer, shouldered in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-01-281-3405 (5310012813405)
- NIIN: 01-281-3405 (012813405)
- Item name: WASHER,SHOULDERED
- Federal Supply Class: [FSC 5310 Nuts and Washers](https://nsnexplorer.com/fsc/5310/)
- 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 2026-10-13)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.5645 AND INCHES MAXIMUM 0.5660 |
| AAVH | SHOULDER DIAMETER | INCHES MINIMUM 0.8015 AND INCHES MAXIMUM 0.8080 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 0.940 |
| ABMG | SHOULDER HEIGHT | INCHES NOMINAL 0.050 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.060 |
| CQFM | HARDNESS RATING | BRINELL MINIMUM 277.0 AND BRINELL MAXIMUM 352.0 |
| FEAT | SPECIAL FEATURES | HOLE OFFSET 0.060 IN. FM CTR; 0.750 IN. ACROSS TWO OPPOSITE FLATS |
| MATT | MATERIAL | OVERALL STEEL COMP 630 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S 5643,COND H1150 OR ASSN STD 2ND MATERIAL RESPONSE A-S 5622,COND H1150 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 70209-04301-107 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-2424 | 391 | 2026-10-20 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310012813405&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310012813405&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310012813405
- 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/5310-01-281-3405/
JSON: https://nsnexplorer.com/api/nsn/5310-01-281-3405.json