The Gear,worm, cataloged under National Stock Number 3020-01-192-4649, 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 Carlisle & Finch Co. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 3020-01-192-4649 |
| Primary Part Number | G90 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Carlisle & Finch Co |
| Status | ACTIVE |
| Keyway Nominal Width | 0.125 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.502 INCHES BOTH ENDS IN |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Hub Style Designator | PINNED FIRST END |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 7370 PIECE 15 | Carlisle & Finch Co (USA) |
| G90 PRIMARY | Carlisle & Finch Co (USA) |
NSN 3020-01-192-4649 is a Gear,worm, manufactured by Carlisle & Finch Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-192-4649 has 2 manufacturer part numbers on file: 7370 PIECE 15 (Carlisle & Finch Co), G90 (Carlisle & Finch Co).
1 possible match (shared part number, not a government interchangeability claim): 6250-01-388-2249. Verify interchangeability with system specifications before substitution.
Key specifications for G90: Keyway Nominal Width: 0.125 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.502 INCHES BOTH ENDS IN; Bore Style: W/ KEYWAY BOTH ENDS; Nominal Distance Between Body Face and Protruding Hub End: 0.250 INCHES FIRST END IN. 7 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.