# NSN 4940-01-643-3981: Adapter, Mechanical Test

NSN 4940-01-643-3981 (also written 4940016433981; NIIN 01-643-3981) is an adapter, mechanical test in Federal Supply Class 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4940-01-643-3981 (4940016433981)
- NIIN: 01-643-3981 (016433981)
- Item name: ADAPTER,MECHANICAL TEST
- Federal Supply Class: [FSC 4940 Miscellaneous Maintenance and Repair Shop Specialized Equipment](https://nsnexplorer.com/fsc/4940/)
- Federal Supply Group: [FSG 49](https://nsnexplorer.com/group/49/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 10013B2015 | 01365 | MARINE CORPS SYSTEMS COMMAND DIV MARINE CORPS SYSTEMS COMMAND TECHNICAL DATA REPOSITORY CUSTOMER SERVICE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 79928 | 0BPN7 | TIFCO INDUSTRIES, INC. DBA TIFCO INDUSTRIES INC | [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=4940016433981&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4940016433981
- 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/4940-01-643-3981/
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