The Shaft,straight, cataloged under National Stock Number 3040-01-270-5852, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-270-5852 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Second End Hole Diameter | 0.2500 INCHES NOMINAL IN |
| First End Diameter | 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| First End Distance From Keyway Center to End | 0.732 INCHES NOMINAL IN |
| Second End Diameter | 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| First End Style | WOODRUFF KEYWAY |
| Material Document and Classification | QQ-S-766 CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.375 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | UNTHREADED CROSS DRILLED |
| Material | STEEL CORROSION RESISTING |
| External Keyway Length | 0.151 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.0928 INCHES MINIMUM AND 0.0943 INCHES MAXIMUM 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 |
|---|---|
| 4849918 | D/9 Drawing number reference only U.S. Government activity |
| 4849912 | D/9 Drawing number reference only U.S. Government activity |
| 4849912 PIECE 4 | 5/2 Secondary reference U.S. Government activity |
| 4849918-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-270-5852 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-282-2504. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-270-5852: Second End Hole Diameter: 0.2500 INCHES NOMINAL IN; First End Diameter: 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 0.732 INCHES NOMINAL IN; Second End Diameter: 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN. 12 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.