The Reamer,machine, cataloged under National Stock Number 3455-01-372-3391, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is United Drill Bushing Corporation Dba United Drill Bushing Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-01-372-3391 |
| Primary Part Number | UCC 74D172-5001 |
| Item Name | Reamer,machine |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | United Drill Bushing Corporation Dba United Drill Bushing Corp |
| Status | ACTIVE |
| Shank Diameter | 0.251 INCHES NOMINAL IN |
| Pilot Type | FIXED |
| Flute Design | STRAIGHT |
| Flute Cut Direction | RIGHT-HAND |
| Shank Type | STRAIGHT |
| Guide | NOT INCLUDED |
| Flute Length | 1.000 INCHES NOMINAL IN |
| Diameter | 0.251 INCHES NOMINAL IN |
| Pilot Diameter | 0.232 INCHES NOMINAL IN |
| Pilot Length | 0.750 INCHES NOMINAL IN |
| Flute Type | INSERTED |
| Flute Quantity | 6 |
| Material | CARBIDE LOCATION NOT OTHERWISE SPECIFIED |
| Reamer Type | MULTIFLUTE |
| 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 |
|---|---|
| UCC 74D172-5001 PRIMARY | United Drill Bushing Corporation Dba United Drill Bushing Corp (USA) |
| Reference | Meaning |
|---|---|
| SPT74D110172-5001 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 3455-01-372-3391 is a Reamer,machine, manufactured by United Drill Bushing Corporation Dba United Drill Bushing Corp, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-372-3391 has 1 manufacturer part number on file: UCC 74D172-5001 (United Drill Bushing Corporation Dba United Drill Bushing Corp).
Key specifications for UCC 74D172-5001: Shank Diameter: 0.251 INCHES NOMINAL IN; Pilot Type: FIXED; Flute Design: STRAIGHT; Flute Cut Direction: RIGHT-HAND. 14 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.