The Pilot,counterbore, cataloged under National Stock Number 3460-00-252-0478, is classified within Federal Supply Class 3460 (Machine Tool Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Wright Machine & Tool Co., Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3460-00-252-0478 |
| Primary Part Number | P25B |
| Item Name | Pilot,counterbore |
| FSC / FSG | 3460 / 34 — Machine Tool Accessories |
| Manufacturer | Wright Machine & Tool Co., Inc. |
| Status | ACTIVE |
| Shank Diameter | 0.125 INCHES NOMINAL IN |
| Shank Type | THREADED |
| Head Length | 0.500 INCHES NOMINAL IN |
| Head Diameter | 0.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| P25B PRIMARY | Wright Machine & Tool Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| P25A | 5/9 Secondary reference Ex-Cell-O Corp Tool and Abrasive Products Div |
| P25B | 5/9 Secondary reference Textron Inc |
NSN 3460-00-252-0478 is a Pilot,counterbore, manufactured by Wright Machine & Tool Co., Inc., classified under FSC 3460, Machine Tool Accessories. Status: active.
NSN 3460-00-252-0478 has 1 manufacturer part number on file: P25B (Wright Machine & Tool Co., Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5930-00-795-3893, 6110-00-946-3060. Verify interchangeability with system specifications before substitution.
Key specifications for P25B: Shank Diameter: 0.125 INCHES NOMINAL IN; Shank Type: THREADED; Head Length: 0.500 INCHES NOMINAL IN; Head Diameter: 0.375 INCHES NOMINAL IN. 4 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.