The Extension Shaft, cataloged under National Stock Number 3040-01-277-6495, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-277-6495 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Socket Diameter | 0.189 INCHES NOMINAL IN |
| Length | 0.820 INCHES NOMINAL IN |
| Socket Depth | 0.250 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Material Document and Classification | QQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.375 INCHES NOMINAL IN |
| Shaft End Design | FEMALE |
| Shaft End Diameter | 0.248 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Shoulder Length | 0.320 INCHES NOMINAL IN |
| End Type | PROCESSED END |
| Shaft End Configuration | ROUND |
| 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 |
|---|---|
| 123B498H02 | 5/9 Secondary reference Northrop Grumman Support Services Corp |
| 123B498 | D/9 Drawing number reference only U.S. Government activity |
| 123B498H02 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3040-01-277-6495 is a Extension Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-277-6495: Socket Diameter: 0.189 INCHES NOMINAL IN; Length: 0.820 INCHES NOMINAL IN; Socket Depth: 0.250 INCHES NOMINAL IN; Style Designator: PLAIN SOCKET. 13 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.