The Clamp,hub, cataloged under National Stock Number 3040-00-374-9661, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Eagle Iron Works. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-374-9661 |
| Primary Part Number | WD1759 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Eagle Iron Works |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 SOCKET HEAD CAP SCREW |
| Plain Hole Diameter | 0.6875 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND SECTIONAL, TWO BOLT SECURED |
| Outside Diameter | 5.000 INCHES NOMINAL IN |
| Counterbore Depth | 0.5000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES IN |
| Counterbore Diameter | 0.7812 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Bore Diameter | 2.7490 INCHES MINIMUM AND 2.7500 INCHES MAXIMUM IN |
| Material | STEEL |
| Thickness | 1.500 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3040-00-374-9661 is a Clamp,hub, manufactured by Eagle Iron Works, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-374-9661 has 2 manufacturer part numbers on file: WD1759 (Eagle Iron Works), 61796 (Eagle Iron Works).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-314-1887, 5345-01-626-2251. Verify interchangeability with system specifications before substitution.
Key specifications for WD1759: Furnished Items and Quantity: 2 SOCKET HEAD CAP SCREW; Plain Hole Diameter: 0.6875 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.