The Clamp,hub, cataloged under National Stock Number 3040-00-555-8874, 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11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-555-8874 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Plain Hole Diameter | 0.1280 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Style Designator | RECTANGULAR, SINGLE BOLT SECURED |
| Material Document and Classification | QQ-S-636, COND 4-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bore Centerline to End | 0.406 INCHES NOMINAL IN |
| Nominal Thread Size | 0.112 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | CADMIUM |
| Bore Diameter | 0.3750 INCHES MINIMUM AND 0.3860 INCHES MAXIMUM IN |
| Material | STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1017 |
| Thickness | 0.152 INCHES MINIMUM AND 0.157 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 |
| Reference | Meaning |
|---|---|
| SMA120198 | 5/9 Secondary reference U.S. Government activity |
| SMA120198 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-555-8874 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-555-8874: Plain Hole Diameter: 0.1280 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Style Designator: RECTANGULAR, SINGLE BOLT SECURED; Material Document and Classification: QQ-S-636, COND 4-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.