The Gear,worm, cataloged under National Stock Number 3020-00-534-2829, 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 L3harris Technologies, Inc. Dba Harris Corporation. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-534-2829 |
| Primary Part Number | GB1551-2 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corporation |
| Status | ACTIVE |
| Thread Form Direction | RIGHT-HAND |
| Bore Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Helix Angle | 3.5833 DEGREES |
| Hub Nominal Diameter | 0.260 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.188 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.079 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Overall Length | 0.625 INCHES IN |
| Pitch Diameter | 0.3333 INCHES NOMINAL IN |
| Thread Form Quantity | 1 |
| Nominal Outside Diameter | 0.375 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.438 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 |
| Part Number | Manufacturer |
|---|---|
| GB1551-2 | L3harris Technologies, Inc. Dba Harris Corporation (USA) |
| Reference | Meaning |
|---|---|
| SCB42188 | 5/2 Secondary reference U.S. Government activity |
| LGB1551-2 | 5/9 Secondary reference Lewyt Corp |
| GB1551-2 | 3/9 Design control — primary reference Itt Industries Inc Itt Aerospace Communications Div East |
NSN 3020-00-534-2829 is a Gear,worm, manufactured by L3harris Technologies, Inc. Dba Harris Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-534-2829 has 1 manufacturer part number on file: GB1551-2 (L3harris Technologies, Inc. Dba Harris Corporation).
Key specifications for GB1551-2: Thread Form Direction: RIGHT-HAND; Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Helix Angle: 3.5833 DEGREES; Hub Nominal Diameter: 0.260 INCHES FIRST END IN. 14 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.