# NSN 5310-00-026-2121: Nut, Plain, Spline

NSN 5310-00-026-2121 (also written 5310000262121; NIIN 00-026-2121) is a nut, plain, spline in Federal Supply Class 5310, Nuts and Washers. 10 manufacturer part numbers from 6 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-00-026-2121 (5310000262121)
- NIIN: 00-026-2121 (000262121)
- Item name: NUT,PLAIN,SPLINE
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-13)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAVL | PILOT DIAMETER | INCHES MINIMUM 0.280 AND INCHES MAXIMUM 0.283 |
| AAVM | PILOT LENGTH | INCHES MINIMUM 0.045 AND INCHES MAXIMUM 0.055 |
| ACTA | NUT STYLE | — |
| ACTD | NUT DIAMETER | INCHES MINIMUM 0.372 AND INCHES MAXIMUM 0.378 |
| ADEA | NUT HEIGHT | INCHES MINIMUM 0.365 AND INCHES MAXIMUM 0.385 |
| BZRR | THREAD SERIES | UNF |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.190 |
| MATT | MATERIAL | OVERALL STEEL COMP 303 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE AST- A582 |
| SFTT | SURFACE TREATMENT | OVERALL PASSIVATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--35 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 277-003-1001 | 97497 | UNITED AIRCRAFT CORP NORDEN DIVISION KETAY DEPT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 277-005-0004 | 95542 | NORTHROP GRUMMAN SYSTEMS CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 364-1020P20 | 3B150 | RAYTHEON COMPANY DBA RAYTHEON CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 364-1020P20 | 49956 | RAYTHEON COMPANY DIV CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6254ASS1032 | 06540 | NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6254ASS1032 | 1YGB8 | CAREY MANUFACTURING CO, INC DBA AMATOM ELECTRONIC HARDWARE DIV AMATOM ELECTRONIC HARDWARE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6254ASS1032-7 | 06540 | NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6254ASS1032-7 | 1YGB8 | CAREY MANUFACTURING CO, INC DBA AMATOM ELECTRONIC HARDWARE DIV AMATOM ELECTRONIC HARDWARE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| PIN120 | 3B150 | RAYTHEON COMPANY DBA RAYTHEON CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| PIN120 | 49956 | RAYTHEON COMPANY DIV CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-1586 | 122 | 2026-10-20 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310000262121&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310000262121&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310000262121
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/5310-00-026-2121/
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