# NSN 5310-00-313-9440: Nut, Plain, Internal Wrenching

NSN 5310-00-313-9440 (also written 5310003139440; NIIN 00-313-9440) is a nut, plain, internal wrenching in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5310-00-313-9440 (5310003139440)
- NIIN: 00-313-9440 (003139440)
- Item name: NUT,PLAIN,INTERNAL WRENCHING
- 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 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.625 |
| CRSQ | COUNTERSINK ANGLE | NUT DEGREES NOMINAL 30.0 |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 38.0 AND ROCKWELL C MAXIMUM 42.0 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| ACTA | NUT STYLE | — |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| ADEA | NUT HEIGHT | INCHES NOMINAL 1.000 |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.6255 AND INCHES MAXIMUM 0.6285 |
| CRTL | CRITICALITY CODE JUSTIFICATION | AATB |
| MATT | MATERIAL | OVERALL STEEL COMP 1340H AND STEEL COMP 4140H |
| SFTT | SURFACE TREATMENT | OVERALL PHOSPHATE |
| BZRR | THREAD SERIES | UNF |
| ACTD | NUT DIAMETER | INCHES MINIMUM 0.981 AND INCHES MAXIMUM 0.986 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5310003139440 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 8716420 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310003139440&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310003139440
- 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/5310-00-313-9440/
JSON: https://nsnexplorer.com/api/nsn/5310-00-313-9440.json