The Gear,worm, cataloged under National Stock Number 3020-00-009-5831, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-009-5831 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Thread Form Direction | RIGHT-HAND |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Helix Angle | 3.5833 DEGREES |
| Hub Nominal Diameter | 0.312 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.220 INCHES FIRST END IN |
| Nominal Overall Length | 0.480 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4990 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Hub Style Designator | PINNED FIRST END |
| Thread Form Quantity | 2 |
| Mounting Hole Nominal Thread Size | 0.086 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Outside Diameter | 0.530 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 56 TRANSVERSELY THROUGH HUB FIRST END |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.260 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 |
|---|---|
| 164B8122P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-009-5831 is a Gear,worm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-009-5831: Thread Form Direction: RIGHT-HAND; Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Helix Angle: 3.5833 DEGREES; Hub Nominal Diameter: 0.312 INCHES FIRST END IN. 22 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.