The Gear,helical, cataloged under National Stock Number 3020-00-971-4777, 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 Schwitzer Engine Components a Household Intl Co. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-971-4777 |
| Primary Part Number | B134235 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Schwitzer Engine Components a Household Intl Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LUBRICANT IMPREGNATED BEARING |
| Bore Nominal Diameter | 0.625 INCHES COUNTERBORE FIRST END IN |
| Helix Angle | 45.0000 DEGREES |
| Hub Nominal Diameter | 1.313 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.790 INCHES FIRST END IN |
| Teeth Quantity | 14 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.017 INCHES COUNTERBORE FIRST END IN |
| Tooth Direction | RIGHT |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.625 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES SECOND END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN SECOND END |
| Hub Style Designator | 1 GROOVE FIRST END |
| Nominal Outside Diameter | 1.9700 INCHES IN |
| Nominal Distance From End to First Groove | 0.193 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| First Groove Nominal Diameter | 0.493 INCHES FIRST END IN |
| Counterbore Nominal Depth | 0.412 INCHES COUNTERBORE FIRST END IN |
| Face Nominal Width | 0.625 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 |
|---|---|
| 286270B | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| B134235 PRIMARY | Schwitzer Engine Components a Household Intl Co (USA) |
| Reference | Meaning |
|---|---|
| 286270B | 5/9 Secondary reference Hercules Engine Co Inc |
| JHP72-76 | C/1 Advisory reference — outside the item-of-supply concept Hollingsworth John R Co |
NSN 3020-00-971-4777 is a Gear,helical, manufactured by Schwitzer Engine Components a Household Intl Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-971-4777 has 2 manufacturer part numbers on file: 286270B (Brinkley Technology Group Llc Dba Hercules Manufacturing), B134235 (Schwitzer Engine Components a Household Intl Co).
Key specifications for B134235: Furnished Items and Quantity: 1 LUBRICANT IMPREGNATED BEARING; Bore Nominal Diameter: 0.625 INCHES COUNTERBORE FIRST END IN; Helix Angle: 45.0000 DEGREES; Hub Nominal Diameter: 1.313 INCHES SECOND END IN. 25 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.