The Gear,worm Wheel, cataloged under National Stock Number 3020-00-042-8158, 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 Heligear Acquisition Co. Dba Northstar Aerospace, Inc.. 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 | 3020-00-042-8158 |
| Primary Part Number | 677008-1 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.033 INCHES BOTH ENDS IN |
| Helix Angle | 21.8012 DEGREES |
| Hub Nominal Diameter | 1.251 INCHES SECOND END IN |
| Teeth Quantity | 30 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | PARTIAL BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.490 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 4.830 INCHES FIRST END IN |
| First Step Nominal Length | 3.900 INCHES FIRST END IN |
| Face Type | STRAIGHT |
| Style Designator | PROTRUDING HUBS |
| Bore Nominal Depth | 4.655 INCHES BOTH ENDS IN |
| Material Document and Classification | QQ-B679,COMP 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.2500 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.194 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| End Nominal Length | 0.930 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.398 INCHES IN |
| End Nominal Diameter | 1.070 INCHES FIRST END IN |
| Pressure Angle | 23.9508 DEGREES |
| Material | ALUMINUM ALLOY OVERALL |
| Mating Thread Lead Quantity | 4 |
| Face Nominal Width | 0.250 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 |
|---|---|
| 677008-1 PRIMARY | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. (USA) |
NSN 3020-00-042-8158 is a Gear,worm Wheel, manufactured by Heligear Acquisition Co. Dba Northstar Aerospace, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-042-8158 has 1 manufacturer part number on file: 677008-1 (Heligear Acquisition Co. Dba Northstar Aerospace, Inc.).
Key specifications for 677008-1: Bore Nominal Diameter: 1.033 INCHES BOTH ENDS IN; Helix Angle: 21.8012 DEGREES; Hub Nominal Diameter: 1.251 INCHES SECOND END IN; Teeth Quantity: 30. 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.