The Pulley,groove, cataloged under National Stock Number 3020-00-436-9478, 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. Government technical data includes 18 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-436-9478 |
| Primary Part Number | 71839 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Groove Depth | 0.156 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Counterbore Feature | NOT INCLUDED |
| Bearings | INCLUDED |
| Face Width | 0.218 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Design Form | PLAIN |
| Protruding Hub Characteristic | PLAIN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Split Hub Feature | NOT INCLUDED |
| Lightening Hole | NOT INCLUDED |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Material Document and Classification | QQ-A-354, COND T-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Shape | U |
| Style Designator | PLAIN |
| Groove Radius | 0.078 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 71839 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 3020-00-436-9478 is a Pulley,groove, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-436-9478 has 1 cross-referenced part number: 71839 (Northrop Grumman Systems Corporation).
There are 2 known substitutes for 3020-00-436-9478: 1220-00-590-6136, 4330-01-438-7244. Verify interchangeability with system specifications before substitution.
Key specifications for 71839: Outside Diameter: 1.250 INCHES NOMINAL IN; Groove Depth: 0.156 INCHES NOMINAL IN; Groove Quantity: 1; Counterbore Feature: NOT INCLUDED. 18 total characteristics are documented in the Federal Logistics Information System.