The Clamp,hub, cataloged under National Stock Number 3040-00-219-7844, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cae Usa Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-219-7844 |
| Primary Part Number | 81493 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Cae Usa Inc. |
| Status | ACTIVE |
| FSC Application Data | TRAINER,FLIGHT SIMULATOR |
| Plain Hole Diameter | 0.1570 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | F-2 3A, SINGER CO, THE SIMULATION PRODUCTS DIV MFR REF SINGLE TREATMENT RESPONSE A |
| Clamp Securing Hole Style | THREADED |
| Style Designator | RECTANGULAR, SINGLE BOLT SECURED |
| Material Document and Classification | QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bore Centerline to End | 0.438 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | CADMIUM |
| Bore Diameter | 0.3750 INCHES MINIMUM AND 0.3800 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 360 |
| Thickness | 0.250 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 |
|---|---|
| 81493 PRIMARY | Cae Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 81493 | 5/9 Secondary reference Raytheon Technical Services Company |
NSN 3040-00-219-7844 is a Clamp,hub, manufactured by Cae Usa Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-219-7844 has 1 manufacturer part number on file: 81493 (Cae Usa Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-311-3608. Verify interchangeability with system specifications before substitution.
Key specifications for 81493: FSC Application Data: TRAINER,FLIGHT SIMULATOR; Plain Hole Diameter: 0.1570 INCHES NOMINAL IN; Surface Treatment Document and Classification: F-2 3A, SINGER CO, THE SIMULATION PRODUCTS DIV MFR REF SINGLE TREATMENT RESPONSE A; Clamp Securing Hole Style: THREADED. 13 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.