The Pulley,groove, cataloged under National Stock Number 3020-00-445-6240, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is De Havilland Aircraft of Canada Limited. Government technical data includes 29 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 | 3020-00-445-6240 |
| Primary Part Number | C4CM1265-1 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | De Havilland Aircraft of Canada Limited |
| Status | ACTIVE |
| FSC Application Data | FUSELAGE,AIRCRAFT |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.700 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.690 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Radius | 0.125 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 6.500 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-A-355, T4-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.285 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | BALL |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | ANODIZE |
| Distance From Outside Flange/rim to Hub End and Location | 0.115 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.3125 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.460 INCHES NOMINAL IN |
| Groove Width | 0.344 INCHES NOMINAL IN |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| C4CM1265-1 PRIMARY | De Havilland Aircraft of Canada Limited (CAN) |
NSN 3020-00-445-6240 is a Pulley,groove, manufactured by De Havilland Aircraft of Canada Limited, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-445-6240 has 1 manufacturer part number on file: C4CM1265-1 (De Havilland Aircraft of Canada Limited).
Key specifications for C4CM1265-1: FSC Application Data: FUSELAGE,AIRCRAFT; Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.700 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED. 29 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 3020-00-445-6240 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.