The Sprocket Wheel, cataloged under National Stock Number 3020-01-203-7784, 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 Link-Belt Cranes, L.p., Lllp. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-203-7784 |
| Primary Part Number | 1H1855 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Link-Belt Cranes, L.p., Lllp |
| Status | ACTIVE |
| Bore Length | 3.112 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.750 INCHES NOMINAL IN |
| Asa Standard Chain Number | 60-4 |
| Outside Diameter | 5.426 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 5.032 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 4 |
| Teeth Quantity Per Row | 21 |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 1.827 INCHES NOMINAL IN |
| Center to Center Distance Between Teeth Rows | 0.480 INCHES NOMINAL IN |
| Keyway Width | 0.750 INCHES NOMINAL IN |
| Bore Diameter | 3.001 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 3.112 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 |
|---|---|
| 1H1855 PRIMARY | Link-Belt Cranes, L.p., Lllp (USA) |
| Reference | Meaning |
|---|---|
| 1H1855-B | D/9 Drawing number reference only Link-Belt Cranes, L.p., Lllp |
NSN 3020-01-203-7784 is a Sprocket Wheel, manufactured by Link-Belt Cranes, L.p., Lllp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-203-7784 has 1 manufacturer part number on file: 1H1855 (Link-Belt Cranes, L.p., Lllp).
Key specifications for 1H1855: Bore Length: 3.112 INCHES NOMINAL IN; Design Form: PLAIN; Tooth Pitch: 0.750 INCHES NOMINAL IN; Asa Standard Chain Number: 60-4. 20 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.