The Extension Shaft, cataloged under National Stock Number 3040-01-418-6567, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-418-6567 |
| Primary Part Number | 7B1-06389 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Socket Diameter | 0.316 INCHES NOMINAL IN |
| Length | 1.940 INCHES NOMINAL IN |
| Socket Depth | 0.750 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Shaft End Design | MALE AND FEMALE |
| Shaft End Diameter | 0.498 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Material | STEEL COMP 304 |
| Shoulder Length | 0.313 INCHES NOMINAL IN |
| End Type | PROCESSED END |
| Shaft End Configuration | FLATTED ROUND AND ROUND |
| 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 |
|---|---|
| 7D3-05168-40 | Lake Shore Systems, Inc. (USA) |
| 7B1-06389 PRIMARY | Lake Shore Systems, Inc. (USA) |
NSN 3040-01-418-6567 is a Extension Shaft, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-418-6567 has 2 manufacturer part numbers on file: 7D3-05168-40 (Lake Shore Systems, Inc.), 7B1-06389 (Lake Shore Systems, Inc.).
Key specifications for 7B1-06389: Socket Diameter: 0.316 INCHES NOMINAL IN; Length: 1.940 INCHES NOMINAL IN; Socket Depth: 0.750 INCHES NOMINAL IN; Style Designator: PLAIN SOCKET. 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.