The Gear,spur, cataloged under National Stock Number 3020-01-069-4039, 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 Continental Emsco Co Skagit Products Div. Government technical data includes 16 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-069-4039 |
| Primary Part Number | B-3522 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Continental Emsco Co Skagit Products Div |
| Status | ACTIVE |
| Bore Nominal Diameter | 3.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 5.250 INCHES SECOND END IN |
| Hub Nominal Diameter | 6.000 INCHES FIRST END IN |
| Teeth Quantity | 78 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Hardness Rating | 200.0 BRINELL STANDARD MINIMUM TEETH |
| Style Designator | FLUSH HUB |
| Material Document and Classification | A148-55 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 19.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 19.9000 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 105-85 OVERALL |
| Face Nominal Width | 2.750 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 |
|---|---|
| B-3522 PRIMARY | Continental Emsco Co Skagit Products Div (USA) |
NSN 3020-01-069-4039 is a Gear,spur, manufactured by Continental Emsco Co Skagit Products Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-069-4039 has 1 manufacturer part number on file: B-3522 (Continental Emsco Co Skagit Products Div).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-614-0368. Verify interchangeability with system specifications before substitution.
Key specifications for B-3522: Bore Nominal Diameter: 3.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 5.250 INCHES SECOND END IN; Hub Nominal Diameter: 6.000 INCHES FIRST END IN; Teeth Quantity: 78. 16 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.