# NSN 5310-00-998-0533: Nut, Self-Locking, Spline

NSN 5310-00-998-0533 (also written 5310009980533; NIIN 00-998-0533) is a nut, self-locking, spline in Federal Supply Class 5310, Nuts and Washers. 9 manufacturer part numbers from 6 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5310-00-998-0533 (5310009980533)
- NIIN: 00-998-0533 (009980533)
- Item name: NUT,SELF-LOCKING,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 B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| BZRR | THREAD SERIES | UNF |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL EXCEPT INSERT ASSN STD SINGLE MATERIAL RESPONSE A-S 5022 |
| SFTT | SURFACE TREATMENT | NUT CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NUT FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 1,CL 3 |
| ACTD | NUT DIAMETER | INCHES NOMINAL 0.625 |
| ADEA | NUT HEIGHT | INCHES NOMINAL 0.422 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.312 |
| MATT | MATERIAL | LOCKING INSERT PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM |
| MATT | MATERIAL | OVERALL EXCEPT INSERT STEEL COMP 1117 |
| AZKQ | TEMP RATING | FAHRENHEIT NOMINAL 250.0 |
| ACTA | NUT STYLE | — |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | LOCKING INSERT MIL SPEC ALL MATERIAL RESPONSES -IL---20693 |
| AAVL | PILOT DIAMETER | INCHES MINIMUM 0.446 AND INCHES MAXIMUM 0.450 |
| AAVM | PILOT LENGTH | INCHES NOMINAL 0.188 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 22FY3-524 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 22FY3-524 | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 42ND-12-524 | 27687 | GREER STOP NUT, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 42ND12-0524 | 27687 | GREER STOP NUT, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 42ND12-054 | 72962 | HARVARD INDUSTRIES INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 50160 | 27687 | GREER STOP NUT, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 50160 | 72429 | MISSION SYSTEMS DAVENPORT INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5310PL1695053 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5310PL1695059 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-8895 | 2,290 | 2026-11-13 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310009980533&category=nsn) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-14 | $1.45 | 2,458 | 86BR3 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310009980533) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-14 | [SPE4A627P1577](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310009980533) | NUT, SELF-LOCKING, SP | — | $3,564.10 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310009980533&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310009980533
- 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.

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