The Gear,helical, cataloged under National Stock Number 3020-01-074-6339, 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 Naval Sea Systems Command. Government technical data includes 18 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-074-6339 |
| Primary Part Number | 8-52-144 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Keyway Nominal Width | 0.185 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.625 INCHES BOTH ENDS IN |
| Helix Angle | 53.0000 DEGREES |
| Hub Nominal Diameter | 0.940 INCHES FIRST END IN |
| Teeth Quantity | 11 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.430 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Tooth Form | SPECIAL |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.3300 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.396 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC OVERALL |
| Face Nominal Width | 0.820 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 |
|---|---|
| 8-52-144 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 8-52T-01 ITEM 43 | 5/9 Secondary reference Itw Heartland Components Inc |
| 8-52T-01 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52T01ITEM43 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52-144 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52-144 | 3/9 Design control — primary reference Itw Heartland Components Inc |
NSN 3020-01-074-6339 is a Gear,helical, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-074-6339 has 1 manufacturer part number on file: 8-52-144 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 3020-01-094-7321, 3020-01-126-8984, 3020-01-126-9090. Verify interchangeability with system specifications before substitution.
Key specifications for 8-52-144: Keyway Nominal Width: 0.185 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.625 INCHES BOTH ENDS IN; Helix Angle: 53.0000 DEGREES; Hub Nominal Diameter: 0.940 INCHES FIRST END IN. 18 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.