The Clamp,hub, cataloged under National Stock Number 3040-01-064-2523, 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12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-064-2523 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 SOCKET HEAD CAP SCREW |
| Plain Hole Diameter | 0.1875 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND SECTIONAL, TWO BOLT SECURED |
| Material Document and Classification | QQ-S-764, TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Nominal Thread Size | 0.112 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.1875 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Thickness | 0.156 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 |
|---|---|
| SS-CL40-2 | 3/9 Design control — primary reference Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited |
| 7400037 | D/9 Drawing number reference only U.S. Government activity |
| 7400037-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-064-2523 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-064-2523: Furnished Items and Quantity: 2 SOCKET HEAD CAP SCREW; Plain Hole Diameter: 0.1875 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Style Designator: ROUND SECTIONAL, TWO 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.