The Tester,material Hardness, cataloged under National Stock Number 6635-01-682-8901, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Schultes Precision Manufacturing Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-682-8901 |
| Primary Part Number | MODEL DD-4 TYPE A |
| Item Name | Tester,material Hardness |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Schultes Precision Manufacturing Inc |
| Status | ACTIVE |
| Indicator Type | DIGITAL COUNTER |
| Carrying Case | PROVIDED |
| 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 |
| Part Number | Manufacturer |
|---|---|
| MODEL DD-4 TYPE A PRIMARY | Schultes Precision Manufacturing Inc (USA) |
NSN 6635-01-682-8901 is a Tester,material Hardness, manufactured by Schultes Precision Manufacturing Inc, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-682-8901 has 1 manufacturer part number on file: MODEL DD-4 TYPE A (Schultes Precision Manufacturing Inc).
Key specifications for MODEL DD-4 TYPE A: Indicator Type: DIGITAL COUNTER; Special Features: HIGH AND LOW BUTTONS FOR SETTING TOLERANCE LIMITS;SOLID STATE CIRCUITRY WITH LCD DISPLAY;BATTERIES INCLUDED;HOLDS READING UNTIL RESET;DIAL ROTATES UP TO 270 DEG;EXTRA-LARGE NUMBER DISPLAY;200 MEASUREMENT READINGS CAN BE STORED INSIDE THE INDICATOR AND VIEWED ON THE LCD;SIZE: 2.5 X 6.125 INCH H IN; Carrying Case: PROVIDED; Part Name Assigned by Controlling Agency: DIGITAL DUROMETER. 3 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.