The Pulley,groove, cataloged under National Stock Number 3020-00-070-6431, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-070-6431 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.415 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.438 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Groove Radius | 0.005 INCHES NOMINAL IN |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-S-763, CLASS 324 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE HUB |
| Groove Depth | 0.156 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | BALL |
| Unable to Decode | UNABLE TO DECODE |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.250 INCHES NOMINAL IN |
| Material | STEEL COMP E52100 AND STEEL COMP 324 HUB |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.327 INCHES NOMINAL IN |
| Groove Width | 0.150 INCHES NOMINAL IN |
| Lightening Hole | INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4-40759-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 4-40759-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 3020-00-070-6431 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-070-6431: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.415 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Bearing Quantity: 1. 24 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.