The Pulley,groove, cataloged under National Stock Number 3020-00-479-8971, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Telemechanics Inc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-479-8971 |
| Primary Part Number | 332090 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.155 INCHES NOMINAL AA END IN |
| Bore Feature | NOT INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Design Form | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| First End Length From Groove to End | 0.031 INCHES NOMINAL AA END IN |
| Groove Radius | 0.047 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 1.808 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 0.875 INCHES NOMINAL AA END IN |
| Style Designator | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| Groove Depth | 0.062 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Protruding Hub Characteristic | GROOVED |
| First End Groove Diameter | 0.120 INCHES NOMINAL AA END IN |
| Material | PLASTIC BODY |
| Material | STEEL HUB |
| Face Width | 0.187 INCHES NOMINAL IN |
| Groove Width | 0.100 INCHES NOMINAL IN |
| First End Groove Width | 0.036 INCHES NOMINAL AA END IN |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 332090 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 332090 | C/1 Advisory reference — outside the item-of-supply concept American Telephone and Telegraph Co |
NSN 3020-00-479-8971 is a Pulley,groove, manufactured by Telemechanics Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-479-8971 has 1 manufacturer part number on file: 332090 (Telemechanics Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-600-6311. Verify interchangeability with system specifications before substitution.
Key specifications for 332090: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.155 INCHES NOMINAL AA END IN; Bore Feature: NOT INCLUDED; Split Hub Feature: NOT INCLUDED. 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.