The Gear,spur, cataloged under National Stock Number 3020-00-042-8138, 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 14 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 | 3020-00-042-8138 |
| Primary Part Number | BL-6221 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LUBRICANT IMPREGNATED BEARING |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.125 INCHES BOTH ENDS IN |
| Teeth Quantity | 61 |
| Body Style | WEBBED, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | FLUSH HUB |
| Pitch Diameter | 1.9062 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.969 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.281 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 |
|---|---|
| BL-6221 PRIMARY | Breeze-Eastern Llc (USA) |
NSN 3020-00-042-8138 is a Gear,spur, manufactured by Breeze-Eastern Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-042-8138 has 1 manufacturer part number on file: BL-6221 (Breeze-Eastern Llc).
Key specifications for BL-6221: Furnished Items and Quantity: 1 LUBRICANT IMPREGNATED BEARING; Bore Nominal Diameter: 0.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.125 INCHES BOTH ENDS IN; Teeth Quantity: 61. 14 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.