The Pulley,timing Belt, cataloged under National Stock Number 3020-01-341-3897, 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 Martin Sprocket and Gear Co 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-341-3897 |
| Primary Part Number | TB24H200 |
| Item Name | Pulley,timing Belt |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Martin Sprocket and Gear Co Inc |
| Status | ACTIVE |
| Face Pitch Designation | H |
| Face Type | FLAT GROOVED WITH DOUBLE FLANGE |
| Bore Type | TAPERED |
| Face Groove/tooth Quantity | 24 |
| Bore Diameter | 0.500 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN |
| Material | IRON CAST |
| Face Width | 2.340 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 |
|---|---|
| TB24H200 | Martin Sprocket and Gear Co Inc (USA) |
| Reference | Meaning |
|---|---|
| TB24H200 | 5/9 Secondary reference Bearing Inc |
| TL24H200 | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
| 6534D617 | D/9 Drawing number reference only U.S. Government activity |
| 6534D617-1 | 3/2 Design control — primary reference U.S. Government activity |
| TL24H200 | 5/9 Secondary reference Borg-Warner (canada) Ltd Morse Chaindiv |
NSN 3020-01-341-3897 is a Pulley,timing Belt, manufactured by Martin Sprocket and Gear Co Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-341-3897 has 1 manufacturer part number on file: TB24H200 (Martin Sprocket and Gear Co Inc).
Key specifications for TB24H200: Face Pitch Designation: H; Face Type: FLAT GROOVED WITH DOUBLE FLANGE; Overall Length: 2.340 INCHES NOMINAL IN; Bore Type: TAPERED. 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.