The Shaft,straight, cataloged under National Stock Number 3040-00-105-9990, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-105-9990 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Second End Hole Diameter | 0.1270 INCHES NOMINAL IN |
| First End Diameter | 0.4991 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.9000 INCHES NOMINAL IN |
| Second End Diameter | 0.4991 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY |
| Material Document and Classification | ASTM A276 ASSN STD ALL MATERIAL RESPONSES |
| First End Keyway Depth | 0.0630 INCHES NOMINAL IN |
| Second End Distance From Hole Center to End | 1.1000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | UNTHREADED CROSS DRILLED |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 |
| External Keyway Length | 0.6250 INCHES NOMINAL FIRST 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 |
| Reference | Meaning |
|---|---|
| SCB422017 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-105-9990 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-105-9990: Surface Finish: 63.0 MICROINCHES; Second End Hole Diameter: 0.1270 INCHES NOMINAL IN; First End Diameter: 0.4991 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.9000 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.