The Pulley,timing Belt, cataloged under National Stock Number 3020-01-028-5526, 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 7 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. 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 | 3020-01-028-5526 |
| Primary Part Number | 400451 |
| Item Name | Pulley,timing Belt |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Hub Diameter | 0.219 INCHES NOMINAL IN |
| Face Type | SINGLE ROW SPROCKET TEETH |
| Bore Type | SPECIFIED |
| Face Groove/tooth Quantity | 14 |
| Bore Diameter | 0.141 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Face Width | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 400451 PRIMARY | Telemechanics Inc (USA) |
NSN 3020-01-028-5526 is a Pulley,timing Belt, manufactured by Telemechanics Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-028-5526 has 1 manufacturer part number on file: 400451 (Telemechanics Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4810-01-394-7594, 5310-01-703-3297. Verify interchangeability with system specifications before substitution.
Key specifications for 400451: Hub Diameter: 0.219 INCHES NOMINAL IN; Face Type: SINGLE ROW SPROCKET TEETH; Overall Length: 0.312 INCHES NOMINAL IN; Bore Type: SPECIFIED. 7 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.