The Gear,helical, cataloged under National Stock Number 3020-00-507-3251, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Cummins Inc.. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3020-00-507-3251 |
| Primary Part Number | 42423-1 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Cummins Inc. |
| Status | CANCELLED |
| Teeth Quantity | 3636 |
| Bore Style | W/ KEYWAY BOTH ENDSW/ KEYWAY BOTH ENDS |
| Nominal Overall Length | 1.396 INCHES1.396 INCHES IN |
| Hub Nominal Diameter | 2.125 INCHES SECOND END2.125 INCHES SECOND END IN |
| Face Nominal Width | 1.250 INCHES1.250 INCHES IN |
| Helix Angle | 22.6198 DEGREES22.6198 DEGREES |
| Nominal Distance From Bore Center to Keyway Bottom | 0.831 INCHES BOTH ENDS0.831 INCHES BOTH ENDS IN |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUBONE PROTRUDING HUB, ONE FLUSH HUB |
| Hub Style Designator | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Bore Nominal Diameter | 1.378 INCHES BOTH ENDS1.378 INCHES BOTH ENDS IN |
| Keyway Nominal Width | 0.312 INCHES BOTH ENDS0.312 INCHES BOTH ENDS IN |
| Body Style | WEBBED, OFFSET, SOLIDWEBBED, OFFSET, SOLID |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Nominal Outside Diameter | 5.132 INCHES5.132 INCHES IN |
| Hub Nominal Diameter | 2.125 INCHES FIRST END2.125 INCHES FIRST END IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4340H ASSN STD SINGLE MATERIAL RESPONSE OVERALLAISI/SAE 4340H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL COMP 4340H OVERALL |
| Tooth Direction | LEFTLEFT |
| Teeth Type | SINGLE HELIXSINGLE HELIX |
| Nominal Distance Between Body Face and Protruding Hub End | 0.146 INCHES FIRST END0.146 INCHES FIRST END IN |
| Tooth Form | STANDARDSTANDARD |
| Pitch Diameter | 4.8750 INCHES NOMINAL4.8750 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 3020-00-507-3251 is a Gear,helical, manufactured by Cummins Inc., classified under FSC 3020 (No Item Name Available). Status: cancelled.
NSN 3020-00-507-3251 has 2 cross-referenced part numbers: 42423-1 (Cummins Inc.), 42423 (Cummins Inc.).
There are 4 known substitutes for 3020-00-507-3251: 2990-00-306-5550, 4810-01-025-3244, 2940-01-038-8787 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 42423-1: Teeth Quantity: 3636; Bore Style: W/ KEYWAY BOTH ENDSW/ KEYWAY BOTH ENDS; Nominal Overall Length: 1.396 INCHES1.396 INCHES IN; Hub Nominal Diameter: 2.125 INCHES SECOND END2.125 INCHES SECOND END IN. 23 total characteristics are documented in the Federal Logistics Information System.
NSN 3020-00-507-3251 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.