The Shaft,straight, cataloged under National Stock Number 3040-01-261-5393, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-261-5393 |
| Primary Part Number | 803-5001048 PIECE 68 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 250.0 MICROINCHES |
| First End Diameter | 0.3085 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.266 INCHES NOMINAL IN |
| Second End Diameter | 0.3085 INCHES NOMINAL IN |
| Second End Step Length | 0.375 INCHES NOMINAL IN |
| First End Style | WOODRUFF KEYWAY AND CIRCULAR GROOVED |
| Second End Angle Between Flats | 180.0 DEGREES NOMINAL |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.1705 INCHES NOMINAL IN |
| First End Groove Diameter | 0.2030 INCHES NOMINAL IN |
| Second End Style | TWO FLATS |
| Material | STEEL COMP 304 |
| First End Groove Width | 0.2020 INCHES NOMINAL IN |
| External Keyway Length | 0.384 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1227 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 |
|---|---|
| 803-5001048 PIECE 68 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-5001048 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-261-5393 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-261-5393 has 1 manufacturer part number on file: 803-5001048 PIECE 68 (Naval Sea Systems Command).
Key specifications for 803-5001048 PIECE 68: Surface Finish: 250.0 MICROINCHES; First End Diameter: 0.3085 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.266 INCHES NOMINAL IN; Second End Diameter: 0.3085 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.