The Sprocket Wheel, cataloged under National Stock Number 3020-00-423-6971, 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 Astec Industries Inc Div Astec Ind.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-423-6971 |
| Primary Part Number | D19-731C |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Astec Industries Inc Div Astec Ind. |
| Status | ACTIVE |
| Hub Outside Diameter | 3.750 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 3.625 INCHES NOMINAL IN |
| Design Form | SPOKED |
| Tooth Pitch | 1.654 INCHES NOMINAL IN |
| Outside Diameter | 20.484 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 19.484 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 37 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 1.5313 INCHES MINIMUM AND 1.5314 INCHES MAXIMUM IN |
| Distance From Hub End to Flange End | 0.188 INCHES NOMINAL BB END IN |
| Distance From Hub End to Flange End | 2.563 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 2 |
| Thread Size | 5/8-11 |
| Keyway Width | 0.623 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Hole Location | ONE HOLE LOCATED ON TOP OF KEYWAY,ONE HOLE LOCATED 120 DEG CLOCKWIE FROM KEYWAY |
| Bore Diameter | 2.4375 INCHES MINIMUM AND 2.4378 INCHES MAXIMUM IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.875 INCHES NOMINAL IN |
| Furnished Items and Quantity | SETSCREWS 2 |
| 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 |
|---|---|
| D19-731C PRIMARY | Astec Industries Inc Div Astec Ind. (USA) |
| Reference | Meaning |
|---|---|
| D19-731C | C/1 Advisory reference — outside the item-of-supply concept Minnpar, Llc Dba Minnpar |
| D19-731C | 5/9 Secondary reference Barber-Greene Co |
NSN 3020-00-423-6971 is a Sprocket Wheel, manufactured by Astec Industries Inc Div Astec Ind., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-423-6971 has 1 manufacturer part number on file: D19-731C (Astec Industries Inc Div Astec Ind.).
Key specifications for D19-731C: Hub Outside Diameter: 3.750 INCHES NOMINAL BOTH ENDS IN; Securing Method: THREADED HOLE(S); Bore Length: 3.625 INCHES NOMINAL IN; Design Form: SPOKED. 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.