The Pilot,counterbore, cataloged under National Stock Number 3460-00-252-0479, is classified within Federal Supply Class 3460 (Machine Tool Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Textron 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3460-00-252-0479 |
| Primary Part Number | P-31B |
| Item Name | Pilot,counterbore |
| FSC / FSG | 3460 / 34 — Machine Tool Accessories |
| Manufacturer | Textron Inc |
| Status | ACTIVE |
| Shank Diameter | 0.125 INCHES NOMINAL IN |
| Shank Type | THREADED |
| Head Length | 0.438 INCHES NOMINAL IN |
| Head Diameter | 0.438 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 |
|---|---|
| P-31B PRIMARY | Textron Inc (USA) |
| Reference | Meaning |
|---|---|
| P31B | 5/1 Secondary reference Wright Machine & Tool Co., Inc. |
| P31B | 3/9 Design control — primary reference Ex-Cell-O Corp Tool and Abrasive Products Div |
NSN 3460-00-252-0479 is a Pilot,counterbore, manufactured by Textron Inc, classified under FSC 3460, Machine Tool Accessories. Status: active.
NSN 3460-00-252-0479 has 1 manufacturer part number on file: P-31B (Textron Inc).
Key specifications for P-31B: Shank Diameter: 0.125 INCHES NOMINAL IN; Shank Type: THREADED; Head Length: 0.438 INCHES NOMINAL IN; Head Diameter: 0.438 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.