The Gear,spur, cataloged under National Stock Number 3020-01-180-7401, 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 L3 Technologies, Inc. Div Ocean Systems. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-180-7401 |
| Primary Part Number | 3329273 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3 Technologies, Inc. Div Ocean Systems |
| Status | ACTIVE |
| Keyway Nominal Width | 0.096 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.437 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.819 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.819 INCHES SECOND END IN |
| Teeth Quantity | 31 |
| Surface Treatment Document and Classification | MIL-P-47090,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.190 INCHES BOTH ENDS IN |
| Nominal Overall Length | 0.690 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | ASTM A479,X-19 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.2140 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 2.304 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.312 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 |
|---|---|
| 3329273 PRIMARY | L3 Technologies, Inc. Div Ocean Systems (USA) |
| Reference | Meaning |
|---|---|
| 3329273 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 3020-01-180-7401 is a Gear,spur, manufactured by L3 Technologies, Inc. Div Ocean Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-180-7401 has 1 manufacturer part number on file: 3329273 (L3 Technologies, Inc. Div Ocean Systems).
Key specifications for 3329273: Keyway Nominal Width: 0.096 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.437 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.819 INCHES FIRST END IN; Hub Nominal Diameter: 0.819 INCHES SECOND END IN. 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.