# NSN 5310-01-121-8525: Washer, Recessed

NSN 5310-01-121-8525 (also written 5310011218525; NIIN 01-121-8525) 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 Jul 2026.

## Identification

- NSN: 5310-01-121-8525 (5310011218525)
- NIIN: 01-121-8525 (011218525)
- 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 G: the government has a complete data package and the rights to use it. (observed 2026-10-27)
- Acquisition method code: 2

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 3.492 AND INCHES MAXIMUM 3.494 |
| ABKV | OUTSIDE DIAMETER | INCHES NOMINAL 3.865 |
| ABKW | OVERALL HEIGHT | INCHES NOMINAL 0.820 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.186 |
| FEAT | SPECIAL FEATURES | ID COUNTERSINK ANGLE 30 DEGREES |
| MATT | MATERIAL | OVERALL ALUMINUM ALLOY 7075 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE MATERIAL RESPONSE QQ-A-225 TO 9,TE-ER T7351 OR FED SPEC SINGLE MATERIAL RESPONSE QQ-A-367,TE-ER T7352 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 74A411520-2001 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-07-15 | [SPE4A626PW525](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011218525) | WASHER, RECESSED | T. R. MACHINE, INC. | $2,834.08 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310011218525&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310011218525
- 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/5310-01-121-8525/
JSON: https://nsnexplorer.com/api/nsn/5310-01-121-8525.json