The Gear,helical, cataloged under National Stock Number 3020-00-468-3391, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-468-3391 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SETSCREW |
| Bore Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Helix Angle | 45.0000 DEGREES |
| Teeth Quantity | 90 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN AND 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.266 INCHES FIRST END IN |
| First Step Nominal Length | 0.250 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.062 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | ASTM B16,1/2H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.9840 INCHES MINIMUM AND 1.9880 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.500 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Mounting Hole Nominal Thread Size | 0.112 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| End Nominal Length | 0.016 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.018 INCHES IN |
| End Nominal Diameter | 0.313 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | COPPER ALLOY 360 OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.125 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 |
|---|---|
| P-501744 | 3/9 Design control — primary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| AA501744 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| D501744PCALL | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| V40255PC13 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
NSN 3020-00-468-3391 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-468-3391: Furnished Items and Quantity: 1 SETSCREW; Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Helix Angle: 45.0000 DEGREES; Teeth Quantity: 90. 27 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.