# NSN 5365-00-531-0518: Spacer, Ring

NSN 5365-00-531-0518 (also written 5365005310518; NIIN 00-531-0518) is a spacer, ring in Federal Supply Class 5365, Bushings, Rings, Shims, and Spacers. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 5365-00-531-0518 (5365005310518)
- NIIN: 00-531-0518 (005310518)
- Item name: SPACER,RING
- Federal Supply Class: [FSC 5365 Bushings, Rings, Shims, and Spacers](https://nsnexplorer.com/fsc/5365/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC Q: the government lacks adequate data or rights, but breakout to competition is expected. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CQFM | HARDNESS RATING | ROCKWELL C MINIMUM 38.0 AND ROCKWELL C MAXIMUM 42.0 |
| ABHE | OUTSIDE DIAMETER | INCHES NOMINAL 1.500 |
| MATT | MATERIAL | STEEL COMP 1045 |
| AARX | INSIDE DIAMETER | INCHES MINIMUM 1.187 AND INCHES MAXIMUM 1.192 |
| ZZZV | FSC APPLICATION DATA | 1. PUMP,AIRCRAFT HYDRAULIC SYSTEM |
| ADUM | OVERALL THICKNESS | INCHES MINIMUM 0.095 AND INCHES MAXIMUM 0.097 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 531-0518 | 59155 | MARINE DIESEL, INC. DBA MARINE DIESEL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 99277 | 62983 | EATON AEROSPACE, LLC DBA JACKSON SOUTH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-14 | $26.95 | 56 | MARINE DIESEL, INC. DBA MARINE DIESEL | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5365005310518) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-14 | [SPE4A727P0582](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5365005310518) | SPACER, RING | MARINE DIESEL, INC. DBA MARINE DIESEL | $1,509.20 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5365005310518&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5365005310518
- 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/5365-00-531-0518/
JSON: https://nsnexplorer.com/api/nsn/5365-00-531-0518.json