The Collar,shaft, cataloged under National Stock Number 3040-01-503-8563, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-503-8563 |
| Primary Part Number | 124-6938645 PART 123 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Securing Hole Type and Location | UNTHREADED SINGLE HOLE |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Hole Diameter and Location | 0.2180 INCHES NOMINAL SINGLE HOLE IN |
| Securing Hole Quantity | 1 |
| Bore Diameter | 1.2520 INCHES MINIMUM AND 1.2540 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| Thickness | 1.000 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 |
|---|---|
| 124-6938645 PART 123 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-6938645 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-503-8563 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-503-8563 has 1 manufacturer part number on file: 124-6938645 PART 123 (Naval Sea Systems Command).
Key specifications for 124-6938645 PART 123: Securing Hole Type and Location: UNTHREADED SINGLE HOLE; Outside Diameter: 2.750 INCHES NOMINAL IN; Hole Diameter and Location: 0.2180 INCHES NOMINAL SINGLE HOLE IN; Securing Hole Quantity: 1. 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.