The Reamer,backing Ring, cataloged under National Stock Number 3455-00-403-6078, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3455-00-403-6078 |
| Item Name | Reamer,backing Ring |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Status | ACTIVE |
| General Characteristics Item Description | 3.812 IN. LG O/A; 1.254 IN. MIN TO 1.256 IN. MAX O/A DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| Y3287 | 5/9 Secondary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
| 73287 | 3/9 Design control — primary reference Thomas C. Wilson, Inc. Dba Thomas C Wilson |
NSN 3455-00-403-6078 is a Reamer,backing Ring, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4810-00-602-4588. Verify interchangeability with system specifications before substitution.
Key specifications for 3455-00-403-6078: General Characteristics Item Description: 3.812 IN. LG O/A; 1.254 IN. MIN TO 1.256 IN. MAX O/A DIA IN. 1 specification is 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.