The Clamp,hub, cataloged under National Stock Number 3040-00-451-2807, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-451-2807 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 32 MICROINCHES INSIDE PERIPHERY |
| Plain Hole Diameter | 0.1330 INCHES MINIMUM AND 0.1390 INCHES MAXIMUM IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | RECTANGULAR, SINGLE BOLT SECURED |
| Material Document and Classification | QQ-S-764, TYPE 416, COND A-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bore Centerline to End | 0.375 INCHES NOMINAL IN |
| Nominal Thread Size | 0.125 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN |
| Material | STEEL COMP 416 |
| Thickness | 0.218 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 |
|---|---|
| SM-C-620256 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-451-2807 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-451-2807: Surface Finish: 32 MICROINCHES INSIDE PERIPHERY; Plain Hole Diameter: 0.1330 INCHES MINIMUM AND 0.1390 INCHES MAXIMUM IN; Clamp Securing Hole Style: THREADED; Style Designator: RECTANGULAR, SINGLE BOLT SECURED. 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.