The Reamer,machine, cataloged under National Stock Number 3455-01-045-7946, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-01-045-7946 |
| Primary Part Number | 202R-531 |
| Item Name | Reamer,machine |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa |
| Status | ACTIVE |
| Shank Diameter | 0.434 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Flute Design | HELICAL |
| Helix Direction | RIGHT-HAND |
| Flute Cut Direction | RIGHT-HAND |
| Shank Type | STRAIGHT |
| Guide | NOT INCLUDED |
| Flute Length | 2.000 INCHES NOMINAL IN |
| Diameter | 0.531 INCHES NOMINAL IN |
| Specification/standard Data | 80204-B94.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Departure From Cited Document | AS MODIFIED BY DIAMETER,HELIX DIRECTION AND FLUTE CUT DIRECTION |
| Flute Type | INTEGRAL |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL CUTTING EDGE TIP |
| Reamer Type | FLUTED CHUCKING |
| 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 |
|---|---|
| 202R-531 PRIMARY | Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa (USA) |
| Reference | Meaning |
|---|---|
| GGG-R-180 | 5/9 Secondary reference U.S. Government activity |
| B94.2 | 3/1 Design control — primary reference U.S. Government activity |
| EDP31634 | 5/9 Secondary reference Lear Siegler Inc National Twist Drill and Tool Div |
NSN 3455-01-045-7946 is a Reamer,machine, manufactured by Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-045-7946 has 1 manufacturer part number on file: 202R-531 (Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa).
Key specifications for 202R-531: Shank Diameter: 0.434 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN; Flute Design: HELICAL; Helix Direction: RIGHT-HAND; 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.