The Gear,spur, cataloged under National Stock Number 3020-00-370-2597, 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 Emerson Electric Co Alco Controls Div. Government technical data includes 20 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 | 3020-00-370-2597 |
| Primary Part Number | W20161 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.312 INCHES FIRST END IN |
| Backlash Designation | GRADE B |
| Teeth Quantity | 71 |
| Body Style | WEBBED, SOLID |
| Counterbore Nominal Diameter | 0.490 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.055 INCHES FIRST END IN |
| Nominal Overall Length | 0.250 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Bore Nominal Depth | 0.250 INCHES BOTH ENDS IN |
| Pitch Diameter | 2.2170 INCHES MINIMUM AND 2.2190 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.278 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Counterbore Nominal Depth | 0.010 INCHES FIRST END IN |
| Attachment Method | SNAP RING |
| Face Nominal Width | 0.189 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 |
|---|---|
| W20161 PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
NSN 3020-00-370-2597 is a Gear,spur, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-370-2597 has 1 manufacturer part number on file: W20161 (Emerson Electric Co Alco Controls Div).
Key specifications for W20161: Bore Nominal Diameter: 0.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.312 INCHES FIRST END IN; Backlash Designation: GRADE B; Teeth Quantity: 71. 20 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.