# NSN 5310-00-421-9990: Nut, Plain, Round

NSN 5310-00-421-9990 (also written 5310004219990; NIIN 00-421-9990) is a nut, plain, round in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5310-00-421-9990 (5310004219990)
- NIIN: 00-421-9990 (004219990)
- Item name: NUT,PLAIN,ROUND
- 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 |
| --- | --- | --- |
| ALET | HOLE TYPE AND QUANTITY | TAPPED 6 |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CSPF | HOLE NOMINAL THREAD DIAMETER | INCHES 0.250 |
| MATT | MATERIAL | OVERALL TITANIUM ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-T-9047,CO- 5 |
| AAWY | COUNTERBORE DIAMETER | NUT INCHES NOMINAL 5.060 |
| ACTA | NUT STYLE | — |
| CQTW | HOLE THREAD QUANTITY PER INCH | 28 |
| CRHC | HOLE CONFIGURATION STYLE | — |
| ADFK | NUT COUNTERBORE DEPTH | NUT INCHES MINIMUM 0.210 AND INCHES MAXIMUM 0.250 |
| BZRR | THREAD SERIES | UN |
| CQJX | NOMINAL THREAD SIZE | INCHES 4.750 |
| ACTD | NUT DIAMETER | INCHES NOMINAL 5.750 |
| ADBG | NUT THICKNESS | INCHES NOMINAL 0.875 |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4T33002-101C | 6Z800 | A AND M AEROSPACE, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4T33002-101C | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-13 | [SPE4A626PAT22](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310004219990) | NUT, PLAIN, ROUND | SKYSPARES PARTS INC | $16,000.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310004219990&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310004219990
- 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/5310-00-421-9990/
JSON: https://nsnexplorer.com/api/nsn/5310-00-421-9990.json