The Bit,rock Drill, cataloged under National Stock Number 3820-00-239-7193, is classified within Federal Supply Class 3820 (Mining, Rock Drilling, Earth Boring, and Related Equipment) of the Construction, Mining, Excavating Equipment group. The manufacturer of record is The Timken Corporation. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3820-00-239-7193 |
| Primary Part Number | MCJ 1 1/2 |
| Item Name | Bit,rock Drill |
| FSC / FSG | 3820 / 38 — Mining, Rock Drilling, Earth Boring, and Related Equipment |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Drilled Hole Diameter | 1.500 INCHES IN |
| Features Provided | TUNGSTEN CARBIDE INSERTS |
| Manufacturer Thread Design Designation | TIMKEN ROLLER BEARING CO SERIES H |
| Material | STEEL |
| Cleaning Hole Location and Quantity | 1 CENTER AND 4 SIDE |
| Cutting End Type | CROSS |
| Attachment Method | THREADED SHOULDER DRIVE |
| 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 |
|---|---|
| T1607MO | Brunner and Lay Inc (USA) |
| MC1 1-2 | The Timken Corporation (USA) |
| MCJ 1 1/2 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| MCJ1-5 | 5/9 Secondary reference The Timken Corporation |
| T16M07 | 5/9 Secondary reference Brunner and Lay Inc |
NSN 3820-00-239-7193 is a Bit,rock Drill, manufactured by The Timken Corporation, classified under FSC 3820, Mining, Rock Drilling, Earth Boring, and Related Equipment. Status: active.
NSN 3820-00-239-7193 has 3 manufacturer part numbers on file: T1607MO (Brunner and Lay Inc), MC1 1-2 (The Timken Corporation), MCJ 1 1/2 (The Timken Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 3010-00-689-3594, 5340-01-132-2287. Verify interchangeability with system specifications before substitution.
Key specifications for MCJ 1 1/2: Drilled Hole Diameter: 1.500 INCHES IN; Features Provided: TUNGSTEN CARBIDE INSERTS; Manufacturer Thread Design Designation: TIMKEN ROLLER BEARING CO SERIES H; Material: STEEL. 7 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.