The Pulley,timing Belt, cataloged under National Stock Number 3020-01-238-6263, 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 Emerson Electric Co Browning Mfg Div. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-238-6263 |
| Primary Part Number | 20HH100 & H 5/8 |
| Item Name | Pulley,timing Belt |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Browning Mfg Div |
| Status | ACTIVE |
| Hub Diameter | 2.500 INCHES NOMINAL IN |
| Face Pitch Designation | H |
| Face Type | FLAT GROOVED WITH DOUBLE FLANGE |
| Bore Type | SPECIFIED |
| Face Groove/tooth Quantity | 20 |
| Bore Diameter | 0.625 INCHES NOMINAL IN |
| Material | STEEL |
| Face Width | 1.250 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 |
|---|---|
| 20HH100 & H 5/8 PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| 20HH100 | Emerson Electric Co Browning Mfg Div (USA) |
| Reference | Meaning |
|---|---|
| 20HH100 BORE 5/8 | 3/9 Design control — primary reference Emerson Electric Co Browning Mfg Div |
NSN 3020-01-238-6263 is a Pulley,timing Belt, manufactured by Emerson Electric Co Browning Mfg Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-238-6263 has 2 manufacturer part numbers on file: 20HH100 & H 5/8 (Emerson Electric Co Browning Mfg Div), 20HH100 (Emerson Electric Co Browning Mfg Div).
Key specifications for 20HH100 & H 5/8: Hub Diameter: 2.500 INCHES NOMINAL IN; Face Pitch Designation: H; Face Type: FLAT GROOVED WITH DOUBLE FLANGE; Overall Length: 1.875 INCHES NOMINAL IN. 8 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.