The Clamp,hub, cataloged under National Stock Number 3040-01-398-3438, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-398-3438 |
| Primary Part Number | 1859545 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Plain Hole Diameter | 0.1930 INCHES NOMINAL IN |
| Clamp Securing Hole Style | UNTHREADED |
| Material Document and Classification | QQ-B-626, ALLOY 360, 1/2H FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 2.1250 INCHES NOMINAL IN |
| Bore Diameter | 1.0000 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 360 |
| Thickness | 0.3200 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 |
|---|---|
| 1859545 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 1859545 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 3040-01-398-3438 is a Clamp,hub, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-398-3438 has 1 manufacturer part number on file: 1859545 (L3 Technologies, Inc. Div L3 Keo).
Key specifications for 1859545: Plain Hole Diameter: 0.1930 INCHES NOMINAL IN; Clamp Securing Hole Style: UNTHREADED; Material Document and Classification: QQ-B-626, ALLOY 360, 1/2H FED SPEC SINGLE MATERIAL RESPONSE; Outside Diameter: 2.1250 INCHES NOMINAL IN. 7 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.