# NSN 5310-01-300-3581: Washer, Spring Tension

NSN 5310-01-300-3581 (also written 5310013003581; NIIN 01-300-3581) is a washer, spring tension in Federal Supply Class 5310, Nuts and Washers. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-01-300-3581 (5310013003581)
- NIIN: 01-300-3581 (013003581)
- Item name: WASHER,SPRING TENSION
- 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 |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES MINIMUM 0.656 AND INCHES MAXIMUM 0.661 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 0.850 AND INCHES MAXIMUM 0.855 |
| ABKW | OVERALL HEIGHT | INCHES MINIMUM 0.057 AND INCHES MAXIMUM 0.063 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.008 AND INCHES MAXIMUM 0.012 |
| MATT | MATERIAL | OVERALL STEEL COMP 302 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-S-5059,1 TO 2 H |
| SFTT | SURFACE TREATMENT | OVERALL PASSIVATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE TREATMENT RESPONSE AST- A380 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| M12133/4-855 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-W-12133/4 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-09-14 | $2.36 | 240 | KAREN CARLISLE DBA B & K AEROSPACE | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013003581) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-14 | [SPE4A626P0Q84](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013003581) | WASHER, SPRING TENSION | KAREN CARLISLE DBA B & K AEROSPACE | $566.40 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310013003581&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013003581
- 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/5310-01-300-3581/
JSON: https://nsnexplorer.com/api/nsn/5310-01-300-3581.json