The Gear,helical, cataloged under National Stock Number 3020-00-273-1601, 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 Dresser, Llc. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-273-1601 |
| Primary Part Number | 145119B |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.158 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.656 INCHES FIRST END IN |
| Helix Angle | 30.0000 DEGREES |
| Hub Nominal Diameter | 1.063 INCHES FIRST END IN |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAF 1141 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.0740 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.243 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.4130 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 1141 OVERALL |
| Face Nominal Width | 0.688 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 |
NSN 3020-00-273-1601 is a Gear,helical, manufactured by Dresser, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-273-1601 has 2 manufacturer part numbers on file: 145119B (Dresser, Llc), 5329340 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 145119B: Keyway Nominal Width: 0.158 INCHES FIRST END IN; Bore Nominal Diameter: 0.656 INCHES FIRST END IN; Helix Angle: 30.0000 DEGREES; Hub Nominal Diameter: 1.063 INCHES FIRST END IN. 20 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.