# NSN 5310-01-598-8901: Nut, Self-Locking, Extended Washer

NSN 5310-01-598-8901 (also written 5310015988901; NIIN 01-598-8901) is a nut, self-locking, extended washer 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: 5310-01-598-8901 (5310015988901)
- NIIN: 01-598-8901 (015988901)
- Item name: NUT,SELF-LOCKING,EXTENDED WASHER
- 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 Z: a commercial, nondevelopmental or off-the-shelf item. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQJX | NOMINAL THREAD SIZE | MILLIMETERS 5.0 |
| CQFM | HARDNESS RATING | ROCKWELL C NOMINAL 28.0 |
| ACTA | NUT STYLE | — |
| BZRR | THREAD SERIES | M |
| ABKW | OVERALL HEIGHT | MILLIMETERS NOMINAL 7.1 |
| AZKQ | TEMP RATING | FAHRENHEIT MAXIMUM 250.0 |
| MATT | MATERIAL | OVERALL EXCEPT INSERT STEEL |
| SFTT | SURFACE TREATMENT | OVERALL EXCEPT INSERT ZINC |
| AAJD | THREAD CLASS | 2B |
| ADEM | WASHER THICKNESS | MILLIMETERS NOMINAL 1.0 |
| ASDB | WIDTH ACROSS FLATS | MILLIMETERS NOMINAL 8.0 |
| MATT | MATERIAL | LOCKING INSERT PLASTIC POLYAMIDE NYLON |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| AAVX | WASHER OUTSIDE DIAMETER | MILLIMETERS NOMINAL 11.8 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NYLON-INSERT HEX FLANGE LOCKNUT |
| CQQR | THREAD PITCH IN MILLIMETERS | 0.8 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 3931486C1 | 338X5 | ND DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 92461A200 | 39428 | MCMASTER-CARR SUPPLY CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-07 | $6.06 | 2 | 9C2V1 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310015988901) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-07 | [SPE7L126V155F](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310015988901) | NUT, SELF-LOCKING, EXTENDED WASHER, HEXAGON | — | $12.12 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310015988901&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310015988901
- 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/5310-01-598-8901/
JSON: https://nsnexplorer.com/api/nsn/5310-01-598-8901.json