The Hub,body, cataloged under National Stock Number 3040-01-557-3050, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-557-3050 |
| Primary Part Number | 5521888 |
| Item Name | Hub,body |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Hub Outside Diameter | 1.100 INCHES NOMINAL IN |
| Shoulder Width | 2.620 INCHES NOMINAL IN |
| Hub Inside Diameter | 0.570 INCHES NOMINAL IN |
| Style Designator | DOUBLE HUB W/ SECRING HOLE(S) |
| Material Document and Classification | AISI 4340 ASSN STD ALL MATERIAL RESPONSES |
| Surface Treatment | PHOSPHATE |
| Distance From First End Hub to Shoulder | 0.440 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Distance From Second End Hub to Shoulder | 1.320 INCHES NOMINAL IN |
| Shoulder Outside Diameter | 1.500 INCHES NOMINAL IN |
| First End Hub Outside Diameter | 1.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5521888 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-557-3050 is a Hub,body, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-557-3050 has 1 manufacturer part number on file: 5521888 (Naval Sea Systems Command).
Key specifications for 5521888: Second End Hub Outside Diameter: 1.100 INCHES NOMINAL IN; Shoulder Width: 2.620 INCHES NOMINAL IN; Hub Inside Diameter: 0.570 INCHES NOMINAL IN; Style Designator: DOUBLE HUB W/ SECRING HOLE(S). 11 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 3040-01-557-3050 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.