The Collar,shaft, cataloged under National Stock Number 3040-00-438-9255, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-438-9255 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Largest Diameter Length | 0.750 INCHES NOMINAL IN |
| Style Designator | ROUND STEPPED |
| Material Document and Classification | QQ-T-830, COMP MT1015-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | SINGLE HOLE UNF |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES SINGLE HOLE IN |
| Small End Diameter | 0.938 INCHES NOMINAL IN |
| Securing Hole Quantity | 1 |
| Surface Treatment | ZINC AND CHROMATE |
| Bore Diameter | 0.7500 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM IN |
| Material | STEEL COMP MT1015 |
| Thickness | 0.875 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 |
|---|---|
| 63B41421 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3040-00-438-9255 is a Collar,shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-438-9255: Securing Hole Type and Location: THREADED SINGLE HOLE; Largest Diameter Length: 0.750 INCHES NOMINAL IN; Style Designator: ROUND STEPPED; Material Document and Classification: QQ-T-830, COMP MT1015-CANCELED FED SPEC SINGLE MATERIAL RESPONSE. 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.