The Sprocket Wheel, cataloged under National Stock Number 3020-00-040-2169, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-040-2169 |
| Primary Part Number | 8330110 |
| 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 |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 1.3125 INCHES NOMINAL1.3125 INCHES NOMINAL IN |
| Design Form | PLAINPLAIN |
| Teeth Hardness Rating | 50.0 ROCKWELL C MINIMUM |
| Tooth Pitch | 0.625 INCHES NOMINAL IN |
| Asa Standard Chain Number | 50 |
| Outside Diameter | 2.4375 INCHES NOMINAL2.4375 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 58.0 ROCKWELL C NOMINAL BODY58.0 ROCKWELL C NOMINAL BODY |
| Pitch Diameter | 2.415 INCHES NOMINAL2.415 INCHES NOMINAL IN |
| Bore Type | STRAIGHTSTRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 12 |
| Protruding Hub Characteristic | STEPPED |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Center of Bore to Bottom of Keyway | 0.683 INCHES MAXIMUM0.683 INCHES MAXIMUM IN |
| Distance From Hub End to Flange End | 1.0625 INCHES NOMINAL BOTH ENDS IN |
| Securing Hole Quantity | 11 |
| Thread Size | 1/4 IN.-201/4 IN.-20 IN |
| Keyway Width | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Hole Location | LOCATED ON TOP OF KEYWAY |
| Bore Diameter | 1.125 INCHES MINIMUM AND 1.125 INCHES MINIMUM AND 1.126 INCHES MAXIMUM1.126 INCHES MAXIMUM IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITYKEYING FACILITY |
| Face Width | 0.240 INCHES NOMINAL0.240 INCHES NOMINAL IN |
| Furnished Items and Quantity | ONE 1/4 IN. -20 BY 3/16 IN. LG SETSCREWONE 1/4 IN. -20 BY 3/16 IN. LG SETSCREW 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 |
|---|---|
| 8330110 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 840E17 | 5/9 Secondary reference Diamond Reo Truck Co |
NSN 3020-00-040-2169 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 3020-00-040-2169 has 1 manufacturer part number on file: 8330110 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8330110: Securing Method: THREADED HOLE(S); Bore Length: 1.3125 INCHES NOMINAL1.3125 INCHES NOMINAL IN; Design Form: PLAINPLAIN; Teeth Hardness Rating: 50.0 ROCKWELL C MINIMUM. 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.