The Sprocket Wheel, cataloged under National Stock Number 3020-00-359-9375, 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 Ametek Inc Heat Transfer Div. Government technical data includes 28 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-359-9375 |
| Primary Part Number | 1630-40-128 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ametek Inc Heat Transfer Div |
| Status | ACTIVE |
| Hub Outside Diameter | 1.875 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.875 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Asa Standard Chain Number | 40 |
| Outside Diameter | 2.650 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 2.405 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 15 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 0.469 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.594 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 1 |
| Thread Size | 0.250-20 |
| Keyway Width | 0.188 INCHES NOMINAL IN |
| Hole Location | CENTERED 0.312 IN.FROM FACE OF HUB,90 DEGS FROM KEYWAY IN |
| Bore Diameter | 0.750 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.284 INCHES NOMINAL IN |
| Furnished Items and Quantity | SETSCREW,ONE EACH |
| Securing Location | AA END |
| 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 |
|---|---|
| 1630-40-128 | Ametek Inc Heat Transfer Div (USA) |
| Reference | Meaning |
|---|---|
| ML19 | 3/9 Design control — primary reference American Laundry Machinery Inc |
| 6-1-2330-20-160 | 5/2 Secondary reference U.S. Government activity |
| 6-1-2330-20-160A | 5/9 Secondary reference Eidal International Corporation |
NSN 3020-00-359-9375 is a Sprocket Wheel, manufactured by Ametek Inc Heat Transfer Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-359-9375 has 1 manufacturer part number on file: 1630-40-128 (Ametek Inc Heat Transfer Div).
1 possible match (shared part number, not a government interchangeability claim): 4925-00-731-2279. Verify interchangeability with system specifications before substitution.
Key specifications for 1630-40-128: Hub Outside Diameter: 1.875 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 0.875 INCHES NOMINAL IN; Design Form: PLAIN. 28 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.