The Gear,helical, cataloged under National Stock Number 3020-00-239-5664, 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 Itt Water & Wastewater U.s.a., Inc. Itt Water & Wastewater Dba Itt Water & Wastewater Usa, Flyg. Government technical data includes 15 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-239-5664 |
| Primary Part Number | 08-984-137-001 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Itt Water & Wastewater U.s.a., Inc. Itt Water & Wastewater Dba Itt Water & Wastewater Usa, Flyg |
| Status | ACTIVE |
| Keyway Nominal Width | 0.188 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.000 INCHES BOTH ENDS IN |
| Teeth Quantity | 12 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 2.4941 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 2.6190 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.562 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | IRON CAST OVERALL |
| 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 |
|---|---|
| 08-984-137-001 PRIMARY | Itt Water & Wastewater U.s.a., Inc. Itt Water & Wastewater Dba Itt Water & Wastewater Usa, Flyg (USA) |
| Reference | Meaning |
|---|---|
| 908-62PC97 | 5/9 Secondary reference U.S. Government activity |
| 908-62PC97 | 5/9 Secondary reference Allis Chalmers Corp |
| 08-984-137PC1 | 5/9 Secondary reference U.S. Government activity |
| 08-984-137PC1 | 5/9 Secondary reference Allis Chalmers Corp |
| 08-908-062PC97 | 5/9 Secondary reference U.S. Government activity |
| 08-984-137-00-001 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-239-5664 is a Gear,helical, manufactured by Itt Water & Wastewater U.s.a., Inc. Itt Water & Wastewater Dba Itt Water & Wastewater Usa, Flyg, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-239-5664 has 1 manufacturer part number on file: 08-984-137-001 (Itt Water & Wastewater U.s.a., Inc. Itt Water & Wastewater Dba Itt Water & Wastewater Usa, Flyg).
Key specifications for 08-984-137-001: Keyway Nominal Width: 0.188 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Teeth Quantity: 12; Body Style: PLAIN, SOLID. 15 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.