The Extension Shaft, cataloged under National Stock Number 3040-01-058-5439, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Zf Industrieantriebe Witten Gmbh. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-058-5439 |
| Primary Part Number | 1802785-2 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Zf Industrieantriebe Witten Gmbh |
| Status | ACTIVE |
| Socket Diameter | 0.1873 INCHES MINIMUM AND 0.1878 INCHES MAXIMUM IN |
| Length | 1.620 INCHES NOMINAL IN |
| Socket Depth | 0.500 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Material Document and Classification | AISI 303 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.312 INCHES MINIMUM IN |
| Shaft End Design | MALE AND FEMALE |
| Shaft End Diameter | 0.1870 INCHES MINIMUM AND 0.1872 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 |
| Shoulder Length | 0.370 INCHES NOMINAL IN |
| End Type | INTEGRAL COUPLING |
| Shaft End Configuration | ROUND AND ROUND W/SCREW DRIVE SLOT |
| 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 |
|---|---|
| 1802785-2 | Zf Industrieantriebe Witten Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| AU2 | 5/9 Secondary reference Zf Industrieantriebe Witten Gmbh |
| PE3-2 | 3/9 Design control — primary reference W. M. Berg, Inc. |
| 1889768PC29 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 3040-01-058-5439 is a Extension Shaft, manufactured by Zf Industrieantriebe Witten Gmbh, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-058-5439 has 1 manufacturer part number on file: 1802785-2 (Zf Industrieantriebe Witten Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-459-4649. Verify interchangeability with system specifications before substitution.
Key specifications for 1802785-2: Socket Diameter: 0.1873 INCHES MINIMUM AND 0.1878 INCHES MAXIMUM IN; Length: 1.620 INCHES NOMINAL IN; Socket Depth: 0.500 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.