The Tester,material Hardness, cataloged under National Stock Number 6635-01-003-5215, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-003-5215 |
| Item Name | Tester,material Hardness |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Status | ACTIVE |
| Indicator Type | CIRCULAR DIAL |
| Usage Design | EXTERNAL |
| Indicator Reading Type | SINGLE |
| Test Type | ROCKWELL |
| Indicator Design | CONVERSION CHART |
| Accessory Components and Quantity | 1 DIAMOND PENETRATOR,1BALL PENETRATOR 1/16 IN.,1 FLAT ANVIL,2 VEE ANVILS,2 HARD STEEL TEST BLOCKS,1 BTASS TEST BLOCK,1 ROCKWELL CONVERSION CHART,1 ADAPTER,1 EXTENSION IN |
| Carrying Case | PROVIDED |
| Horizontal Reach | 2.000 INCHES IN |
| Installation Design | PORTABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AT2200 | 3/2 Design control — primary reference U.S. Government activity |
| 2 | 5/9 Secondary reference U.S. Government activity |
NSN 6635-01-003-5215 is a Tester,material Hardness, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
Key specifications for 6635-01-003-5215: Indicator Type: CIRCULAR DIAL; Usage Design: EXTERNAL; Indicator Reading Type: SINGLE; Test Type: ROCKWELL. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.