# NSN 5310-01-319-6944: Washer, Concave

NSN 5310-01-319-6944 (also written 5310013196944; NIIN 01-319-6944) is a washer, concave in Federal Supply Class 5310, Nuts and Washers. 9 manufacturer part numbers from 9 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5310-01-319-6944 (5310013196944)
- NIIN: 01-319-6944 (013196944)
- Item name: WASHER,CONCAVE
- 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 R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.333 |
| ABGG | RADIUS | INCHES NOMINAL 0.260 |
| ABKV | OUTSIDE DIAMETER | INCHES MINIMUM 0.465 AND INCHES MAXIMUM 0.475 |
| ABPX | MATERIAL THICKNESS | INCHES MINIMUM 0.110 AND INCHES MAXIMUM 0.120 |
| FEAT | SPECIAL FEATURES | SOLID FILM LUBE,MIL-L-8937 |
| MATT | MATERIAL | OVERALL STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 632 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S 5643 OR ASSN STD 2ND MATERIAL RESPONSE A-S 5520 OR ASSN STD 3RD MATERIAL RESPONSE A-S 5528 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 03A084-8L | 1W025 | NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN COMPUTING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 06725 | SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 14776 | SAFRAN CABIN STERLING, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 5M902 | HOWMET GLOBAL FASTENING SYSTEMS INC. DIV VOI-SHAN PRODUCTS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 60516 | WEST COAST AEROSPACE, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 73197 | HI-SHEAR CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HL75-8DW | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-29 | [SPE4A626P0K75](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013196944) | WASHER, CONCAVE | WESCO AIRCRAFT HARDWARE CORP. DBA INCORA | $316.84 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5310013196944&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5310013196944
- 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/5310-01-319-6944/
JSON: https://nsnexplorer.com/api/nsn/5310-01-319-6944.json