The Gear,helical, cataloged under National Stock Number 3020-00-618-3511, 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 Circor Pumps North America Llc. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-618-3511 |
| Primary Part Number | SG3711PC59 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.188 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.000 INCHES BOTH ENDS IN |
| Helix Angle | 37.3999 DEGREES |
| Hub Nominal Diameter | 1.750 INCHES BOTH ENDS IN |
| Teeth Quantity | 74 |
| Body Style | WEBBED, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.094 INCHES SECOND END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-890,CL AN MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.9527 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 5.0527 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.598 INCHES BOTH ENDS IN |
| Pressure Angle | 15.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.500 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 |
|---|---|
| SG3711PC59 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG3711PC59 | 5/9 Secondary reference Siemens Energy, Inc. |
| W416BS5X1 | 5/9 Secondary reference Siemens Energy, Inc. |
| W416BS5X1 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
NSN 3020-00-618-3511 is a Gear,helical, manufactured by Circor Pumps North America Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-618-3511 has 1 manufacturer part number on file: SG3711PC59 (Circor Pumps North America Llc).
Key specifications for SG3711PC59: Keyway Nominal Width: 0.188 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Helix Angle: 37.3999 DEGREES; Hub Nominal Diameter: 1.750 INCHES BOTH ENDS IN. 21 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.