The Gear,spur, cataloged under National Stock Number 3020-00-271-9981, 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 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-271-9981 |
| Primary Part Number | 733399PC3 |
| Item Name | Gear,spur |
| 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 | 1.125 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.740 INCHES FIRST END IN |
| Teeth Quantity | 25 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.156 INCHES BOTH ENDS IN |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.937 INCHES FIRST END IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM TEETH |
| Hardness Rating | 18.8 ROCKWELL C MINIMUM AND 24.2 ROCKWELL C MAXIMUM HUB |
| Nominal Overall Length | 0.688 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66,AISI/SAE 8640 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Spline Quantity | 17 BOTH ENDS |
| Nominal Outside Diameter | 3.374 INCHES IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 8640 OVERALL |
| Counterbore Nominal Depth | 0.290 INCHES BOTH ENDS IN |
| Spline Pitch Diameter | 1.0620 INCHES NOMINAL BOTH ENDS 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 |
|---|---|
| 733399PC3 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-271-9981 is a Gear,spur, 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 3020-00-271-9981 has 1 manufacturer part number on file: 733399PC3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 733399PC3: Bore Nominal Diameter: 1.125 INCHES FIRST END IN; Hub Nominal Diameter: 1.740 INCHES FIRST END IN; Teeth Quantity: 25; Body Style: PLAIN, SOLID. 22 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.