# NSN 5310-00-173-8991: Washer, Recessed

NSN 5310-00-173-8991 (also written 5310001738991; NIIN 00-173-8991) 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 Aug 2026.

## Identification

- NSN: 5310-00-173-8991 (5310001738991)
- NIIN: 00-173-8991 (001738991)
- 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 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| STYL | STYLE DESIGNATOR | — |
| MATT | MATERIAL | OVERALL ALUMINUM ALLOY 2024 |
| ABMH | RECESS DEPTH | INCHES NOMINAL 0.080 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.040 AND INCHES MAXIMUM 0.050 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE MATERIAL RESPONSE QQ-A-225 TO 6 |
| ABKW | OVERALL HEIGHT | INCHES NOMINAL 0.130 |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.300 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 0.665 AND INCHES MAXIMUM 0.675 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4B69011-103A | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-31 | $5.25 | 151 | CTN MACHINING LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001738991) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-31 | [SPE4A626P0D49](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001738991) | WASHER, RECESSED | — | $792.75 |
| 2026-08-27 | [SPEWA626P0244](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001738991) | WASHER, RECESSED | BROWN HELICOPTER, INC. DBA BROWN HELICOPTER INC | $286.80 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001738991&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001738991
- 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/5310-00-173-8991/
JSON: https://nsnexplorer.com/api/nsn/5310-00-173-8991.json