# NSN 5310-00-621-5973: Nut, Self-Locking, Plate

NSN 5310-00-621-5973 (also written 5310006215973; NIIN 00-621-5973) is a nut, self-locking, plate in Federal Supply Class 5310, Nuts and Washers. 7 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5310-00-621-5973 (5310006215973)
- NIIN: 00-621-5973 (006215973)
- Item name: NUT,SELF-LOCKING,PLATE
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ACVN | NUT LENGTH | INCHES NOMINAL 0.985 |
| ADEA | NUT HEIGHT | INCHES MINIMUM 0.540 AND INCHES MAXIMUM 0.560 |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| ADFY | CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | INCHES MINIMUM 0.686 AND INCHES MAXIMUM 0.690 |
| MATT | MATERIAL | LOCKING INSERT STEEL CORROSION RESISTING |
| MATT | MATERIAL | OVERALL EXCEPT INSERT ALUMINUM ALLOY 6061 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | LOCKING INSERT ASSN STD SINGLE MATERIAL RESPONSE A-S 7245 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL EXCEPT INSERT MIL SPEC SINGLE MATERIAL RESPONSE -IL-A-12545 |
| SFTT | SURFACE TREATMENT | OVERALL EXCEPT INSERT CHROMATE |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.190 |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH METALLIC INSERT |
| ABTB | MOUNTING HOLE DIAMETER | INCHES NOMINAL 0.098 |
| BZRR | THREAD SERIES | UNF |
| ADFW | DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | INCHES NOMINAL 0.344 |
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ADFU | MOUNTING HOLE ARRANGEMENT STYLE | — |
| ADEB | PLATE THICKNESS | INCHES NOMINAL 0.060 |
| ADEC | PLATE WIDTH | INCHES NOMINAL 0.396 |
| ADFP | NUT MOUNTING PROVISION | STRAIGHT HOLES |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL EXCEPT INSERT MIL SPEC SINGLE TREATMENT RESPONSE -IL-C-5541 |
| ACTA | NUT STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10121562 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5300014-55 | 60119 | MONADNOCK COMPANY, THE DBA LISI AEROSPACE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| ST4M134-3-55 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WSI-4-55 | 04169 | ATLAS CORP WESTERN SKY INDUSTRIES DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WSI-4-55 | 83014 | HARTWELL CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WSI-4-55NH | 83014 | HARTWELL CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| WSI4-55D | 04169 | ATLAS CORP WESTERN SKY INDUSTRIES DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-05 | $18.89 | 240 | APOLLO AEROSPACE COMPONENTS LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310006215973) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-05 | [SPE4A627P1040](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310006215973) | NUT, SELF-LOCKING, PLATE | APOLLO AEROSPACE COMPONENTS LLC | $4,533.60 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310006215973&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310006215973
- 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/5310-00-621-5973/
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