The Collar,shaft, cataloged under National Stock Number 3040-01-407-4921, 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 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-407-4921 |
| Primary Part Number | 5266581 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES OVERALL |
| Securing Hole Type and Location | UNTHREADED ALL HOLES |
| Largest Diameter Length | 0.568 INCHES NOMINAL IN |
| Style Designator | ROUND W/DOUBLE CHAMFER |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Hole Diameter and Location | 0.1873 INCHES MINIMUM ALL HOLES AND 0.1881 INCHES MAXIMUM ALL HOLES IN |
| Angle Between Centerlines of Securing Holes in Deg | 180.0 |
| Securing Hole Quantity | 2 |
| Chamfer Angle in Deg | 45.0 |
| Bore Diameter | 0.5930 INCHES MINIMUM AND 0.5980 INCHES MAXIMUM IN |
| Material | STEEL |
| Thickness | 0.580 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 |
|---|---|
| 5266581 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-407-4921 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-407-4921 has 1 manufacturer part number on file: 5266581 (Naval Sea Systems Command).
Key specifications for 5266581: Surface Finish: 125 MICROINCHES OVERALL; Securing Hole Type and Location: UNTHREADED ALL HOLES; Largest Diameter Length: 0.568 INCHES NOMINAL IN; Style Designator: ROUND W/DOUBLE CHAMFER. 12 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.