The Clamp,hub, cataloged under National Stock Number 3040-01-281-4418, 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 13 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 | 3040-01-281-4418 |
| Primary Part Number | 6289595 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES OVERALL |
| Plain Hole Diameter | 0.6240 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND SECTIONAL, TWO BOLT SECURED |
| Outside Diameter | 1.620 INCHES NOMINAL IN |
| Counterbore Depth | 0.3100 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.7500 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.6240 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.620 INCHES NOMINAL IN |
| 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 |
|---|---|
| 6289595 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-281-4418 is a Clamp,hub, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-281-4418 has 1 manufacturer part number on file: 6289595 (Naval Sea Systems Command).
Key specifications for 6289595: Surface Finish: 125 MICROINCHES OVERALL; Plain Hole Diameter: 0.6240 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Style Designator: ROUND SECTIONAL, TWO BOLT SECURED. 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.