The Pulley,groove, cataloged under National Stock Number 3020-01-357-7172, 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28 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-357-7172 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | TAPERED-LOCK BUSHING AND THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 2.050 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 4.630 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Protruding Hub Characteristic | GROOVED |
| Distance From Center of Bore to Bottom of Keyway | 1.220 INCHES NOMINAL IN |
| Securing Hole Quantity | 3 |
| Bolt Circle Diameter | 3.875 INCHES NOMINAL IN |
| Thread Size | 3/8-16 |
| Keyway Width | 0.500 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | PASSIVATE |
| Distance From Outside Flange/rim to Hub End and Location | 1.550 INCHES NOMINAL AA END IN |
| Hole Location | ON PULLEY SURFACE |
| Bore Diameter | 2.005 INCHES NOMINAL IN |
| Material | PLASTIC OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.500 INCHES NOMINAL IN |
| Securing Location | PULLEY SURFACE |
| 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 |
|---|---|
| 53X-02-203 | 3/9 Design control — primary reference Illinois Tool Wks Inc Linac Div |
NSN 3020-01-357-7172 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-357-7172: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: TAPERED-LOCK BUSHING AND THREADED HOLE(S); Split Hub Feature: NOT 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.