The Sprocket Wheel, cataloged under National Stock Number 3020-01-327-3885, 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 General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 16 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 | 3020-01-327-3885 |
| Primary Part Number | 157D3321 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Spline Minor Diameter | 0.563 INCHES NOMINAL IN |
| Hub Outside Diameter | 0.840 INCHES NOMINAL AA END IN |
| Design Form | SPOKED |
| Tooth Pitch | 32.000 INCHES NOMINAL IN |
| Spline Length | 0.680 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Spline Major Diameter | 0.662 INCHES NOMINAL IN |
| Bore Type | STRAIGHT SPLINE |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 4 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Spline Quantity | 15 |
| Distance From Hub End to Flange End | 0.480 INCHES NOMINAL AA END IN |
| Material | STEEL |
| Face Width | 0.200 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 157D3321 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
NSN 3020-01-327-3885 is a Sprocket Wheel, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-327-3885 has 1 manufacturer part number on file: 157D3321 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 157D3321: Spline Minor Diameter: 0.563 INCHES NOMINAL IN; Hub Outside Diameter: 0.840 INCHES NOMINAL AA END IN; Design Form: SPOKED; Tooth Pitch: 32.000 INCHES NOMINAL IN. 16 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.
NSN 3020-01-327-3885 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.