The Collar,shaft, cataloged under National Stock Number 3040-01-500-5799, 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 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-500-5799 |
| Primary Part Number | 581-6985418-59 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES OVERALL |
| Counterbore Depth and Location | 0.9655 INCHES NOMINAL ALL HOLES IN |
| Securing Hole Type and Location | THREADED-COUNTERBORED ALL HOLES |
| Screw Thread Quantity Per Inch and Location | 13 ALL HOLES |
| Style Designator | ROUND SECTIONAL |
| Material Document and Classification | QQ-N-281, CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | ALL HOLES UNIFIED NATIONAL COARSE (UNC) |
| Outside Diameter | 5.880 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES ALL HOLES IN |
| Angle Between Centerlines of Securing Holes in Deg | 180.0 |
| Securing Hole Quantity | 4 |
| Bore Diameter | 3.0000 INCHES NOMINAL IN |
| Material | NICKEL ALLOY 400 |
| Counterbore Diameter and Location | 0.7810 INCHES NOMINAL ALL HOLES IN |
| Thickness | 2.996 INCHES MINIMUM AND 3.002 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 |
| Part Number | Manufacturer |
|---|---|
| 581-6985418-59 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H611-1402-59 | 5/2 Secondary reference U.S. Government activity |
| 581-6985418 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-500-5799 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-500-5799 has 1 manufacturer part number on file: 581-6985418-59 (Naval Sea Systems Command).
Key specifications for 581-6985418-59: Surface Finish: 125 MICROINCHES OVERALL; Counterbore Depth and Location: 0.9655 INCHES NOMINAL ALL HOLES IN; Securing Hole Type and Location: THREADED-COUNTERBORED ALL HOLES; Screw Thread Quantity Per Inch and Location: 13 ALL HOLES. 15 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.