The Extension Shaft, cataloged under National Stock Number 3040-01-334-4764, 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13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-334-4764 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Socket Diameter | 0.378 INCHES NOMINAL IN |
| Length | 1.600 INCHES NOMINAL IN |
| Socket Depth | 0.365 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Material Document and Classification | AMS-5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.688 INCHES NOMINAL IN |
| Shaft End Design | MALE AND FEMALE |
| Shaft End Diameter | 0.374 INCHES NOMINAL IN |
| Material | STEEL |
| Shoulder Length | 0.440 INCHES NOMINAL IN |
| End Type | INTEGRAL COUPLING AND DETACHABLE COUPLING |
| Shaft End Configuration | SQUARE |
| Attachment Method | SQUARE HOLES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 9032757-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-334-4764 is a Extension Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-334-4764: Socket Diameter: 0.378 INCHES NOMINAL IN; Length: 1.600 INCHES NOMINAL IN; Socket Depth: 0.365 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.
NSN 3040-01-334-4764 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.