The Sprocket Wheel, cataloged under National Stock Number 3020-00-752-2398, 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 U S Army Tank Automotive Command Amsta-Im-Mm. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-752-2398 |
| Primary Part Number | 7522398 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Hub Outside Diameter | 1.875 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 1.250 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM |
| Flange Thickness | 0.188 INCHES NOMINAL IN |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Asa Standard Chain Number | 40 |
| Outside Diameter | 3.296 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 26.0 ROCKWELL C MINIMUM BODY AND 32.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | QQ-S-624, FS4140-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-624, FS4150-CANCELED FED SPEC 2ND MATERIAL RESPONSE |
| Pitch Diameter | 3.038 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Counterbore Depth | 1.031 INCHES NOMINAL AND 0.375 INCHES NOMINAL IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 19 |
| Counterbore Location | BB END |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Counterbore Diameter | 0.812 INCHES NOMINAL AND 1.562 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 1.063 INCHES NOMINAL BB END IN |
| Securing Hole Quantity | 3 |
| Bolt Circle Diameter | 1.875 INCHES NOMINAL IN |
| Thread Size | 10-32 |
| Surface Treatment | PHOSPHATE |
| Hole Location | ON SPROCKET FACE |
| Bore Diameter | 0.630 INCHES MINIMUM AND 0.635 INCHES MAXIMUM 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 |
|---|---|
| 7522398 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-00-752-2398 is a Sprocket Wheel, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-752-2398 has 1 manufacturer part number on file: 7522398 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7522398: Hub Outside Diameter: 1.875 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 1.250 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.