The Collar,shaft, cataloged under National Stock Number 3040-00-520-6438, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 16 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 | 3040-00-520-6438 |
| Primary Part Number | 5206438 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES INSIDE PERIPHERY |
| Surface Finish | 125 MICROINCHES OUTSIDE PERIPHERY |
| Surface Finish | 125 MICROINCHES OPPOSITE BEARING FLAT |
| Surface Finish | 32 MICROINCHES ONE BEARING FLAT |
| Securing Hole Type and Location | THREADED ALL HOLES |
| Style Designator | PLAIN ROUND |
| Material Document and Classification | QQ-S-634, COMP 1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | ALL HOLES UNF |
| Outside Diameter | 1.031 INCHES NOMINAL IN |
| Nominal Thread Size | 0.086 INCHES ALL HOLES IN |
| Angle Between Centerlines of Securing Holes in Deg | 120.0 |
| Securing Hole Quantity | 3 |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.8440 INCHES NOMINAL IN |
| Material | STEEL COMP 1020 |
| Thickness | 0.188 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5206438 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 3040-00-520-6438 is a Collar,shaft, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-520-6438 has 1 manufacturer part number on file: 5206438 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 5206438: Surface Finish: 125 MICROINCHES INSIDE PERIPHERY; Surface Finish: 125 MICROINCHES OUTSIDE PERIPHERY; Surface Finish: 125 MICROINCHES OPPOSITE BEARING FLAT; Surface Finish: 32 MICROINCHES ONE BEARING FLAT. 16 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.
NSN 3040-00-520-6438 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.