The Pulley,groove, cataloged under National Stock Number 3020-00-677-7922, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-677-7922 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| FSC Application Data | COMPUTER CONTROLS,RADAR SET,NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILES |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.314 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Securing Method | SLOTTED HUB CLAMP AND SHAFT |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.500 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.141 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 0.875 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-355, T4-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.070 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | CHROMATE |
| Distance From Outside Flange/rim to Hub End and Location | 0.062 INCHES NOMINAL AA END AND 0.251 INCHES NOMINAL BB END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.189 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.187 INCHES NOMINAL IN |
| Groove Width | 0.139 INCHES NOMINAL IN |
| Securing Location | AA END |
| Lightening Hole | NOT 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 |
|---|---|
| 537781 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-677-7922 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-677-7922: FSC Application Data: COMPUTER CONTROLS,RADAR SET,NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILES; Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.314 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED. 28 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.