The Shaft,straight, cataloged under National Stock Number 3040-01-268-5341, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-268-5341 |
| Primary Part Number | 4849911 PIECE 3 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| First End Diameter | 0.4995 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 2.125 INCHES NOMINAL IN |
| Second End Diameter | 0.4995 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.7310 INCHES NOMINAL IN |
| First End Style | WOODRUFF KEYWAY AND CROSS DRILLED |
| Second End Keyway Width | 0.0935 INCHES NOMINAL IN |
| Second End Distance Between Keyway Centers | 2.300 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-766 CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.2500 INCHES NOMINAL IN |
| Second End Style | TWO WOODRUFF KEYWAYS |
| Material | STEEL CORROSION RESISTING |
| First End Distance From Hole Center to End | 0.375 INCHES NOMINAL IN |
| External Keyway Length | 0.509 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 0.509 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.0935 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 |
|---|---|
| 4849911 PIECE 3 | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 4849918 | D/9 Drawing number reference only U.S. Government activity |
| 4849911 PIECE 3 | 5/9 Secondary reference U.S. Government activity |
| 4849911 | D/9 Drawing number reference only U.S. Government activity |
| 4849918-2 | 3/2 Design control — primary reference U.S. Government activity |
| 4849911 PIECE 3 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-268-5341 is a Shaft,straight, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-268-5341 has 1 manufacturer part number on file: 4849911 PIECE 3 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-270-5852, 3040-01-282-2504. Verify interchangeability with system specifications before substitution.
Key specifications for 4849911 PIECE 3: Surface Finish: 125.0 MICROINCHES; First End Diameter: 0.4995 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 2.125 INCHES NOMINAL IN; Second End Diameter: 0.4995 INCHES NOMINAL IN. 17 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.