The Gear,worm, cataloged under National Stock Number 3020-00-517-4378, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-517-4378 |
| Primary Part Number | 989998 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Nominal Outside Diameter | 0.750 INCHES IN |
| Hub Style Designator | PLAIN FIRST END |
| Face Nominal Width | 1.000 INCHES IN |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Hardness Rating | 92.0 ROCKWELL C MAXIMUM OVERALL |
| Mounting Hole Nominal Diameter | 0.109 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Attachment Method | MOUNTING HOLE |
| Hub Nominal Diameter | 0.438 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Material | STEEL COMP 4140 OVERALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Helix Angle | 5.7167 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Bore Nominal Diameter | 0.312 INCHES BOTH ENDS IN |
| Thread Form Direction | RIGHT-HAND |
| Pressure Angle | 14.5000 DEGREES |
| Thread Form Quantity | 1 |
| Pitch Diameter | 0.6250 INCHES NOMINAL IN |
| Face Type | STRAIGHT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 3020-00-517-4378 is a Gear,worm, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-517-4378 has 3 cross-referenced part numbers: 989998 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 989998 (Profile Gear Corp), TA3829 (L3 Technologies, Inc. Div L3 Keo).
There is 1 known substitute for 3020-00-517-4378: 3805-00-772-7649. Verify interchangeability with system specifications before substitution.
Key specifications for 989998: Nominal Outside Diameter: 0.750 INCHES IN; Hub Style Designator: PLAIN FIRST END; Face Nominal Width: 1.000 INCHES IN; Mounting Hole Type and Quantity: 2 PLAIN TRANSVERSELY THROUGH HUB FIRST END. 20 total characteristics are documented in the Federal Logistics Information System.