The Gear,worm Wheel, cataloged under National Stock Number 3020-01-110-1300, 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 Caro, Inc. Dba South Bend Lathe. Government technical data includes 25 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 | 3020-01-110-1300 |
| Primary Part Number | PT77H1 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caro, Inc. Dba South Bend Lathe |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.500 INCHES BOTH ENDS IN |
| Teeth Quantity | 36 |
| Second Step Nominal Diameter | 2.156 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.875 INCHES SECOND COUNTERBORE SECOND END IN |
| Counterbore Nominal Diameter | 2.875 INCHES FIRST COUNTERBORE SECOND END IN |
| Third Step Nominal Diameter | 3.750 INCHES FIRST END IN |
| Tooth Direction | LEFT |
| Bore Style | W/STEPPED COUNTERBORE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.468 INCHES FIRST END IN |
| First Step Nominal Length | 0.998 INCHES FIRST END IN |
| Throat Nominal Radius | 4.021 INCHES IN |
| Second Step Nominal Length | 0.125 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 3.8070 INCHES MINIMUM AND 3.8110 INCHES MAXIMUM IN |
| First Step Nominal Diameter | 2.197 INCHES FIRST END IN |
| Hub Style Designator | 3 STEPS FIRST END |
| End Nominal Length | 0.094 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.180 INCHES IN |
| End Nominal Diameter | 2.000 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Counterbore Nominal Depth | 0.938 INCHES FIRST COUNTERBORE SECOND END IN |
| Third Step Nominal Length | 0.251 INCHES FIRST END IN |
| Face Nominal Width | 0.938 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 |
|---|---|
| PT77H1 PRIMARY | Caro, Inc. Dba South Bend Lathe (USA) |
NSN 3020-01-110-1300 is a Gear,worm Wheel, manufactured by Caro, Inc. Dba South Bend Lathe, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-110-1300 has 1 manufacturer part number on file: PT77H1 (Caro, Inc. Dba South Bend Lathe).
Key specifications for PT77H1: Bore Nominal Diameter: 1.500 INCHES BOTH ENDS IN; Teeth Quantity: 36; Second Step Nominal Diameter: 2.156 INCHES FIRST END IN; Body Style: PLAIN, SOLID. 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.