The Gear,helical, cataloged under National Stock Number 3020-00-250-8089, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-250-8089 |
| Primary Part Number | SP17673 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.5630 INCHES BOTH ENDS IN |
| Teeth Quantity | 25 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 2.8342 INCHES BOTH ENDS IN |
| Tooth Direction | LEFT |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4340 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.8690 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Nominal Outside Diameter | 4.0900 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4340 OVERALL |
| Face Nominal Width | 3.878 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 |
|---|---|
| SP17673 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 225680PC1 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| TP17673 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-250-8089 is a Gear,helical, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-250-8089 has 3 manufacturer part numbers on file: SP17673 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 225680PC1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), TP17673 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for SP17673: Bore Nominal Diameter: 2.5630 INCHES BOTH ENDS IN; Teeth Quantity: 25; Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 2.8342 INCHES BOTH ENDS IN. 15 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.