The Gear,helical, cataloged under National Stock Number 3020-00-496-3772, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-496-3772 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.250 INCHES BOTH ENDS IN |
| Helix Angle | 20.6433 DEGREES |
| Teeth Quantity | 17 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.375 INCHES FIRST END IN |
| First Step Nominal Length | 0.125 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 1045 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.2610 INCHES MINIMUM AND 2.2640 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.875 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| End Nominal Length | 1.250 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.513 INCHES IN |
| End Nominal Diameter | 1.752 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1045 OVERALL |
| Face Nominal Width | 1.250 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 |
| Reference | Meaning |
|---|---|
| 2J16C | 3/9 Design control — primary reference American-Marsh Pumps Inc Novo Pump and Engine Division |
| 2J16B | 5/9 Secondary reference American-Marsh Pumps Inc Novo Pump and Engine Division |
| 2J16C | 5/9 Secondary reference Merrill E R Spring Co the |
NSN 3020-00-496-3772 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-496-3772: Bore Nominal Diameter: 1.250 INCHES BOTH ENDS IN; Helix Angle: 20.6433 DEGREES; Teeth Quantity: 17; Body Style: PLAIN, SOLID. 21 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.