The Bit,rock Drill, cataloged under National Stock Number 3820-00-239-7190, 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 Brunner and Lay Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3820-00-239-7190 |
| Primary Part Number | T2507MO |
| Item Name | Bit,rock Drill |
| FSC / FSG | 3820 / 38 — Mining, Rock Drilling, Earth Boring, and Related Equipment |
| Manufacturer | Brunner and Lay Inc |
| Status | ACTIVE |
| Drilled Hole Diameter | 1.875 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 |
|---|---|
| T2507MO | Brunner and Lay Inc (USA) |
| Reference | Meaning |
|---|---|
| MC1 7-8 | 5/9 Secondary reference The Timken Corporation |
| T25M07 | 5/9 Secondary reference Brunner and Lay Inc |
| MCJ1-875 | 5/9 Secondary reference The Timken Corporation |
| MCJ-1-7/8 | 3/9 Design control — primary reference Brunner and Lay Inc Rok-Bit Div |
NSN 3820-00-239-7190 is a Bit,rock Drill, manufactured by Brunner and Lay Inc, classified under FSC 3820, Mining, Rock Drilling, Earth Boring, and Related Equipment. Status: active.
NSN 3820-00-239-7190 has 1 manufacturer part number on file: T2507MO (Brunner and Lay Inc).
Key specifications for T2507MO: Drilled Hole Diameter: 1.875 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.