The Reamer,machine, cataloged under National Stock Number 3455-01-335-2433, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Tivoly U S a Union Butterfield Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-01-335-2433 |
| Primary Part Number | 50-11056 |
| Item Name | Reamer,machine |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Tivoly U S a Union Butterfield Div |
| Status | ACTIVE |
| Point Diameter | 0.281 INCHES NOMINAL IN |
| Flute Design | HELICAL |
| Helix Direction | LEFT-HAND |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Flute Cut Direction | RIGHT-HAND |
| Shank Type | MORSE TAPER |
| Guide | NOT INCLUDED |
| Flute Length | 5.125 INCHES NOMINAL IN |
| Shank Taper Number | 2 |
| Specification/standard Data | 61805-50-11056 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Flute Type | INTEGRAL |
| Flute Quantity | 4 |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Reamer Type | BRIDGE TAPER |
| 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 |
|---|---|
| 50-11056 PRIMARY | Tivoly U S a Union Butterfield Div (USA) |
| Reference | Meaning |
|---|---|
| 4579-1/2 | 5/9 Secondary reference Tivoly U S a Union Butterfield Div |
NSN 3455-01-335-2433 is a Reamer,machine, manufactured by Tivoly U S a Union Butterfield Div, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-335-2433 has 1 manufacturer part number on file: 50-11056 (Tivoly U S a Union Butterfield Div).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-512-7322. Verify interchangeability with system specifications before substitution.
Key specifications for 50-11056: Point Diameter: 0.281 INCHES NOMINAL IN; Flute Design: HELICAL; Helix Direction: LEFT-HAND; Overall Diameter: 0.500 INCHES NOMINAL IN. 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.