# NSN 6635-01-116-4678: Tester, Material Hardness

NSN 6635-01-116-4678 (also written 6635011164678; NIIN 01-116-4678) is a tester, material hardness in Federal Supply Class 6635, Physical Properties Testing and Inspection Equipment. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 6635-01-116-4678 (6635011164678)
- NIIN: 01-116-4678 (011164678)
- Item name: TESTER,MATERIAL HARDNESS
- Federal Supply Class: [FSC 6635 Physical Properties Testing and Inspection Equipment](https://nsnexplorer.com/fsc/6635/)
- Federal Supply Group: [FSG 66](https://nsnexplorer.com/group/66/)
- 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 |
| --- | --- | --- |
| AMQY | INSTALLATION DESIGN | PORTABLE |
| AQYF | TEST TYPE | ROCKWELL |
| BCKT | HORIZONTAL REACH | INCHES 12.000 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12A-NAV-2674 | 31060 | SERVICE DIAMOND TOOL COMPANY DBA SERVICE PHYSICAL TESTERS DIV DIV SERVICE PHYSICAL TESTERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MIL-T-4638A | 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/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6635011164678&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6635011164678
- 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/6635-01-116-4678/
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