The Gear,helical, cataloged under National Stock Number 3020-00-275-1089, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-275-1089 |
| Primary Part Number | 6161 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Div Marine Systems |
| Status | ACTIVE |
| Teeth Quantity | 56 |
| Keyway Nominal Width | 0.250 INCHES BOTH ENDS IN |
| Hub Style Designator | PLAIN FIRST END |
| Material Document and Classification | QQ-C-390,ALLOY D5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Face Nominal Width | 0.625 INCHES IN |
| Teeth Type | SINGLE HELIX |
| Tooth Form | STANDARD |
| Nominal Distance Between Body Face and Protruding Hub End | 0.750 INCHES FIRST END IN |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Helix Angle | 30.0000 DEGREES |
| Bore Nominal Diameter | 1.125 INCHES BOTH ENDS IN |
| Body Recess Nominal Depth | 0.250 INCHES SECOND END IN |
| Hub Nominal Diameter | 2.000 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Pitch Diameter | 5.6000 INCHES NOMINAL IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.688 INCHES BOTH ENDS IN |
| Nominal Outside Diameter | 5.7670 INCHES IN |
| Tooth Direction | LEFT |
| Material | COPPER ALLOY 903 OVERALL |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Body Style | WEBBED, OFFSET, SOLID |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D15-648XPC526 | Westinghouse Electric Corp (USA) |
| D15-769BPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739XPC526 | Westinghouse Electric Corp (USA) |
| D15-648XPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739XPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-648ZPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739YPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739ZPC526 | Westinghouse Electric Corp (USA) |
| 6161 PRIMARY | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| D15-648AAPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-648AAPC526 | Westinghouse Electric Corp (USA) |
| D15-648ZPC526 | Westinghouse Electric Corp (USA) |
| D15-739BPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-7690PC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739YPC526 | Westinghouse Electric Corp (USA) |
| D15-648BPC526 | Westinghouse Electric Corp (USA) |
| D15-648BPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739NPC526 | Westinghouse Electric Corp Sturtevant Div (USA) |
| 6161 | Westinghouse Electric Corp Sturtevant Div (USA) |
| D15-739BPC526 | American Precision Gear Company Dba American Precision Gear Co Div Same (USA) |
NSN 3020-00-275-1089 is a Gear,helical, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-275-1089 has 34 cross-referenced part numbers: D15-648XPC526 (Westinghouse Electric Corp), D15-769BPC526 (Westinghouse Electric Corp Sturtevant Div), D15-739XPC526 (Westinghouse Electric Corp), D15-648XPC526 (Westinghouse Electric Corp Sturtevant Div), D15-739XPC526 (Westinghouse Electric Corp Sturtevant Div) and 29 more.
There are 12 known substitutes for 3020-00-275-1089: 5960-00-262-0135, 4510-00-279-0500, 5935-00-303-0827 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6161: Teeth Quantity: 56; Keyway Nominal Width: 0.250 INCHES BOTH ENDS IN; Hub Style Designator: PLAIN FIRST END; Material Document and Classification: QQ-C-390,ALLOY D5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 21 total characteristics are documented in the Federal Logistics Information System.