The Gear,spur, cataloged under National Stock Number 3020-00-997-1641, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-997-1641 |
| Primary Part Number | 2523887 |
| 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 | 1.000 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.500 INCHES BOTH ENDS IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.150 INCHES SECOND END IN |
| Teeth Quantity | 33 |
| Surface Treatment Document and Classification | MIL-P-16232,TYPE M MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Precision Classification | QUALITY NUMBER 11 |
| Style Designator | ONE FLUSH HUB, ONE RECESSED HUB |
| Pitch Diameter | 3.3000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 19 BOTH ENDS |
| Nominal Outside Diameter | 3.500 INCHES IN |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 0.9500 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.250 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 |
|---|---|
| 2523887 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2523887REVA | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3020-00-997-1641 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 3020-00-997-1641 has 1 manufacturer part number on file: 2523887 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2523887: Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.500 INCHES BOTH ENDS IN; Nominal Distance Between Body Face and Recessed Hub End: 0.150 INCHES SECOND END IN; Teeth Quantity: 33. 19 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.