# NSN 5310-01-015-1853: Washer, Recessed

NSN 5310-01-015-1853 (also written 5310010151853; NIIN 01-015-1853) is a washer, recessed in Federal Supply Class 5310, Nuts and Washers. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-01-015-1853 (5310010151853)
- NIIN: 01-015-1853 (010151853)
- Item name: WASHER,RECESSED
- 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 Z: a commercial, nondevelopmental or off-the-shelf item. (observed 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.191 AND INCHES MAXIMUM 0.195 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 0.355 AND INCHES MAXIMUM 0.375 |
| ABMD | RECESS DIAMETER | INCHES MINIMUM 0.280 AND INCHES MAXIMUM 0.290 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.057 AND INCHES MAXIMUM 0.069 |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 39.0 AND ROCKWELL C MAXIMUM 43.0 |
| CSTM | RECESS ANGLE | DEGREES NOMINAL 90.0 |
| MATT | MATERIAL | OVERALL STEEL COMP 4130 OR STEEL COMP 1050 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-6758 OR MIL SPEC 1ST MATERIAL RESPONSE -IL-S-18729 OR ASSN STD 2ND MATERIAL RESPONSE A-S 5085 |
| SFTT | SURFACE TREATMENT | OVERALL NICKEL AND CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S 2416 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| WCL22N-3 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-03 | [SPE4A625D5800/SPE4A626F410G](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310010151853) | WASHER, RECESSED | APOLLO AEROSPACE COMPONENTS LLC | $2,128.92 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310010151853&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310010151853
- 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/5310-01-015-1853/
JSON: https://nsnexplorer.com/api/nsn/5310-01-015-1853.json