The Pulley,groove, cataloged under National Stock Number 3020-01-115-8122, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-115-8122 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.591 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | NOT INCLUDED |
| Third Step Length and Location | 0.729 INCHES NOMINAL AA END IN |
| Split Hub Feature | NOT INCLUDED |
| Design Form | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| First Step Face Largest Diameter and Location | 0.627 INCHES NOMINAL AA END AND 0.875 INCHES NOMINAL BB END IN |
| Second Step Face Largest Diameter and Location | 0.875 INCHES NOMINAL AA END IN |
| Groove Radius | 0.200 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 1.437 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 2.447 INCHES NOMINAL AA END AND 1.916 INCHES NOMINAL BB END IN |
| Second Step Length | 1.240 INCHES NOMINAL AA END IN |
| Second Step Length | 1.396 INCHES NOMINAL BB END IN |
| Style Designator | PLAIN |
| Groove Depth | 0.356 INCHES NOMINAL IN |
| Groove Quantity | 7 |
| Protruding Hub Characteristic | STEPPED |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| First Step Length | 0.520 INCHES NOMINAL BB END IN |
| First Step Length | 0.478 INCHES NOMINAL AA END IN |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 2.447 INCHES NOMINAL AA END AND 1.916 INCHES NOMINAL BB END IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Face Width | 3.750 INCHES NOMINAL IN |
| Groove Width | 0.400 INCHES NOMINAL IN |
| Lightening Hole | NOT INCLUDED |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| 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 |
|---|---|
| 8-52-140 | D/9 Drawing number reference only Illinois Tool Wks Inc Linac Div |
| 8-52-140-16 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52-140-16 | 3/9 Design control — primary reference Itw Heartland Components Inc |
NSN 3020-01-115-8122 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-115-8123, 3020-01-115-8124. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-115-8122: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.591 INCHES NOMINAL BOTH ENDS IN; Bore Feature: NOT INCLUDED; Third Step Length and Location: 0.729 INCHES NOMINAL AA END IN. 29 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.