# NSN 5310-00-104-5143: Washer, Key

NSN 5310-00-104-5143 (also written 5310001045143; NIIN 00-104-5143) is a washer, key in Federal Supply Class 5310, Nuts and Washers. 6 manufacturer part numbers from 6 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5310-00-104-5143 (5310001045143)
- NIIN: 00-104-5143 (001045143)
- Item name: WASHER,KEY
- 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 2026-11-04)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABLD | EXTERNAL TAPERED KEY WIDTH | INCHES MINIMUM 0.320 AND INCHES MAXIMUM 0.330 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 0.560 AND INCHES MAXIMUM 0.570 |
| ABKY | EXTERNAL PREBENT KEY LENGTH | INCHES MINIMUM 0.140 AND INCHES MAXIMUM 0.150 |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.390 AND INCHES MAXIMUM 0.395 |
| FEAT | SPECIAL FEATURES | BOTH ANGULAR KEYS BENT 15.0 DEG IN OPPOSITE DIRECTION OF PREBENT KEY |
| MATT | MATERIAL | OVERALL STEEL COMP 321 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S5510 |
| STYL | STYLE DESIGNATOR | — |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | DEGREES MINIMUM 58.0 AND DEGREES MAXIMUM 62.0 |
| CSKN | EXTERNAL PREBENT KEY ANGLE | DEGREES NOMINAL 15.0 |
| ABLF | EXTERNAL PREBENT KEY WIDTH | INCHES MINIMUM 0.140 AND INCHES MAXIMUM 0.145 |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | INCHES MAXIMUM 0.375 |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | INCHES NOMINAL 0.856 |
| ABMM | SPLIT KEY LENGTH | INCHES MINIMUM 0.170 AND INCHES MAXIMUM 0.175 |
| ABMQ | EXTERNAL KEY QUANTITY | 3 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.028 AND INCHES MAXIMUM 0.036 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10479865 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 104T678 | 77445 | RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 104T678 | 79500 | WESTINGHOUSE ELECTRIC CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS9276 P/N MS9276-12 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9276-12 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9276-12 | 99193 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-11 | [SPE4A726D5631/SPE4A726F9353](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001045143) | WASHER, KEY | MIDWAY INDUSTRIAL SUPPLY INC. | $1,718.50 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310001045143&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310001045143
- 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/5310-00-104-5143/
JSON: https://nsnexplorer.com/api/nsn/5310-00-104-5143.json