The Pulley,groove, cataloged under National Stock Number 3020-01-221-0257, 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 Thermo King Corporation Dba Phoenix Global Distirbution.. Government technical data includes 10 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 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 | 3020-01-221-0257 |
| Primary Part Number | 77-762 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Thermo King Corporation Dba Phoenix Global Distirbution. |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 4.300 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 0.628 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 77-762 PRIMARY | Thermo King Corporation Dba Phoenix Global Distirbution. (USA) |
NSN 3020-01-221-0257 is a Pulley,groove, manufactured by Thermo King Corporation Dba Phoenix Global Distirbution., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-221-0257 has 1 manufacturer part number on file: 77-762 (Thermo King Corporation Dba Phoenix Global Distirbution.).
1 possible match (shared part number, not a government interchangeability claim): 8465-01-662-2033. Verify interchangeability with system specifications before substitution.
Key specifications for 77-762: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Design Form: PLAIN; Groove Shape: V. 10 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.