The Gear,worm, cataloged under National Stock Number 3020-01-020-2673, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-020-2673 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Thread Form Direction | LEFT-HAND |
| Helix Angle | 4.7667 DEGREES |
| Hub Nominal Diameter | 0.750 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES FIRST END IN |
| Nominal Overall Length | 1.500 INCHES IN |
| Pitch Diameter | 1.0000 INCHES NOMINAL IN |
| Thread Form Quantity | 1 |
| Pressure Angle | 14.5000 DEGREES |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.125 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 |
|---|---|
| 421907-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-020-2673 is a Gear,worm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5985-01-158-8842. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-020-2673: Thread Form Direction: LEFT-HAND; Helix Angle: 4.7667 DEGREES; Hub Nominal Diameter: 0.750 INCHES FIRST END IN; Bore Style: PLAIN BOTH ENDS. 11 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.