The Gear,spur, cataloged under National Stock Number 3020-00-759-8565, 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 Breeze-Eastern Llc. Government technical data includes 17 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 | 3020-00-759-8565 |
| Primary Part Number | BL4569 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.420 INCHES BOTH ENDS IN |
| Teeth Quantity | 40 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.610 INCHES SECOND END IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.890 INCHES IN |
| Style Designator | CONE SHAPE BODY, PROTRUDING HUB |
| Material Document and Classification | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 11 BOTH ENDS |
| Nominal Outside Diameter | 1.312 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8740 OVERALL |
| Body Recess Nominal Depth | 0.230 INCHES FIRST END IN |
| Face Nominal Width | 0.280 INCHES 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 |
|---|---|
| BL4569 PRIMARY | Breeze-Eastern Llc (USA) |
NSN 3020-00-759-8565 is a Gear,spur, manufactured by Breeze-Eastern Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-759-8565 has 1 manufacturer part number on file: BL4569 (Breeze-Eastern Llc).
Key specifications for BL4569: Bore Nominal Diameter: 0.420 INCHES BOTH ENDS IN; Teeth Quantity: 40; Body Style: WEBBED, OFFSET, SOLID; Bore Style: STRAIGHT SPLINE BOTH ENDS. 17 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.