The Drive Assembly Tach, cataloged under National Stock Number 2990-00-233-8147, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-233-8147 |
| Primary Part Number | 203599 |
| Item Name | Drive Assembly Tach |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | 3.382 IN.O/A LG;STEEL SHAFT W/18 TOOTH HELICAL DRIVE GEAR AND BUSHING;0.650 IN.OD OF GEAR,0.500 WIDTH OF FACE;0.686 IN.OD BUSHING BY 1.500 IN.LG;BEARING SURFACE ON SHAFT 0.438 IN.DIA BY 0.475 IN.LG 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 |
|---|---|
| 203599 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 203599 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 2990002338147 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| AR51313 | 5/9 Secondary reference Cummins Inc. |
| AR6263 | 5/9 Secondary reference Cummins Inc. |
NSN 2990-00-233-8147 is a Drive Assembly Tach, manufactured by Cummins Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-233-8147 has 1 manufacturer part number on file: 203599 (Cummins Inc.).
Key specifications for 203599: General Characteristics Item Description: 3.382 IN.O/A LG;STEEL SHAFT W/18 TOOTH HELICAL DRIVE GEAR AND BUSHING;0.650 IN.OD OF GEAR,0.500 WIDTH OF FACE;0.686 IN.OD BUSHING BY 1.500 IN.LG;BEARING SURFACE ON SHAFT 0.438 IN.DIA BY 0.475 IN.LG 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.