The Gear,spur, cataloged under National Stock Number 3020-00-993-5322, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-993-5322 |
| Primary Part Number | 1213145 |
| 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 | 1.656 INCHES BOTH ENDS IN |
| Teeth Quantity | 21 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Mounting Hole Type and Quantity | 4 THREADED AXIALLY THROUGH BODY FIRST END |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM BODY |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | HUBLESS |
| Material Document and Classification | MIL-S-890,CL HG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 27 BOTH ENDS |
| Mounting Hole Nominal Thread Size | 0.500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 5.750 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 13 AXIALLY THROUGH BODY FIRST END |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Bolt Hole Circle Nominal Diameter | 3.375 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Spline Pitch Diameter | 1.6870 INCHES NOMINAL BOTH ENDS IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.375 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 |
|---|---|
| 1213145 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| D3-4795-6063 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-993-5322 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 3020-00-993-5322 has 1 manufacturer part number on file: 1213145 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1213145: Bore Nominal Diameter: 1.656 INCHES BOTH ENDS IN; Teeth Quantity: 21; Body Style: PLAIN, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 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.