The Shaft,straight, cataloged under National Stock Number 3040-01-077-2331, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-077-2331 |
| Primary Part Number | 9N1632 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| First End Diameter | 0.5625 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.438 INCHES NOMINAL IN |
| Second End Diameter | 0.5625 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.438 INCHES NOMINAL IN |
| First End Style | WOODRUFF KEYWAY |
| Second End Keyway Width | 0.1250 INCHES NOMINAL IN |
| Second End Groove Diameter | 0.5300 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0390 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.891 INCHES NOMINAL IN |
| Second End Style | WOODRUFF KEYWAY AND CIRCULAR GROOVED |
| Material | STEEL |
| External Keyway Length | 0.562 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 0.562 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.1250 INCHES NOMINAL 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 |
|---|---|
| 9N1632 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3040-01-077-2331 is a Shaft,straight, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-077-2331 has 1 manufacturer part number on file: 9N1632 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 9N1632: Surface Finish: 63.0 MICROINCHES; First End Diameter: 0.5625 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.438 INCHES NOMINAL IN; Second End Diameter: 0.5625 INCHES NOMINAL IN. 16 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.