The Clamp,hub, cataloged under National Stock Number 3040-00-935-7978, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-935-7978 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES INSIDE PERIPHERY |
| Surface Finish | 125 MICROINCHES BOTH BEARING FLATS |
| Surface Finish | 125 MICROINCHES OUTSIDE PERIPHERY |
| Plain Hole Diameter | 0.1090 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND, SINGLE BOLT SECURED |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 420 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 51420 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.470 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.060 INCHES IN |
| Screw Thread Series Designator | UNF |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN |
| Material | STEEL COMP 420 |
| Thickness | 0.125 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 |
| Reference | Meaning |
|---|---|
| 12612-6 | 5/9 Secondary reference U.S. Government activity |
| 12612-6 | 3/9 Design control — primary reference Moog Inc. Dba Moog Components Group |
NSN 3040-00-935-7978 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-935-7978: Surface Finish: 125 MICROINCHES INSIDE PERIPHERY; Surface Finish: 125 MICROINCHES BOTH BEARING FLATS; Surface Finish: 125 MICROINCHES OUTSIDE PERIPHERY; Plain Hole Diameter: 0.1090 INCHES NOMINAL IN. 14 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.