The Clamp,hub, cataloged under National Stock Number 3040-01-347-2826, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-347-2826 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Plain Hole Diameter | 0.1380 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | RECTANGULAR, SINGLE BOLT SECURED |
| Material Document and Classification | QQ-S-764, TYPE 416-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bore Centerline to End | 0.344 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE AND DICHROMATE |
| Bore Diameter | 0.1880 INCHES NOMINAL IN |
| Material | STEEL COMP 416 |
| Thickness | 0.240 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 |
|---|---|
| 212752-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-347-2826 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2815-01-440-1604, 4820-01-544-9532. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-347-2826: Plain Hole Diameter: 0.1380 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Style Designator: RECTANGULAR, SINGLE BOLT SECURED; Material Document and Classification: QQ-S-764, TYPE 416-CANCELED FED SPEC SINGLE MATERIAL RESPONSE. 11 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.