The Gear,helical, cataloged under National Stock Number 3020-00-274-6080, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-274-6080 |
| Primary Part Number | 26-252 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Tooth Form | STANDARD |
| Pitch Diameter | 1.3750 INCHES NOMINAL IN |
| Mounting Hole Nominal Diameter | 0.161 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Face Nominal Width | 0.813 INCHES IN |
| Hub Nominal Diameter | 1.1875 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Outside Diameter | 1.4935 INCHES IN |
| Bore Nominal Diameter | 0.8555 INCHES BOTH ENDS IN |
| Helix Angle | 71.4499 DEGREES |
| Nominal Distance Between Body Face and Protruding Hub End | 0.438 INCHES FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Keyway Nominal Width | 0.127 INCHES BOTH ENDS IN |
| Hub Style Designator | PLAIN FIRST END |
| Teeth Type | SINGLE HELIX |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAF 1141 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Direction | RIGHT |
| Material | STEEL COMP 1141 OVERALL |
| Nominal Distance From Bore Center to Keyway Bottom | 0.5098 INCHES BOTH ENDS IN |
| Teeth Quantity | 7 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 26-252 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
NSN 3020-00-274-6080 is a Gear,helical, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-274-6080 has 1 cross-referenced part number: 26-252 (Dresser Industries Inc Leroi Div).
There are 4 known substitutes for 3020-00-274-6080: 5961-00-068-2000, 3120-00-474-3125, 4720-00-846-6558 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 26-252: Tooth Form: STANDARD; Pitch Diameter: 1.3750 INCHES NOMINAL IN; Mounting Hole Nominal Diameter: 0.161 INCHES TRANSVERSELY THROUGH HUB FIRST END IN; Pressure Angle: 14.5000 DEGREES. 24 total characteristics are documented in the Federal Logistics Information System.