The Sprocket Wheel, cataloged under National Stock Number 3020-00-451-0257, 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 Emerson Electric Co Browning Mfg Div. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-451-0257 |
| Primary Part Number | 3532X5/8 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Browning Mfg Div |
| Status | ACTIVE |
| Hub Outside Diameter | 2.500 INCHES NOMINAL AA END IN |
| Securing Method | SETSCREW |
| Bore Length | 0.875 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.375 INCHES NOMINAL IN |
| Asa Standard Chain Number | 35-1 |
| Outside Diameter | 4.010 INCHES MINIMUM AND 4.030 INCHES MAXIMUM IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Material Document and Classification | AISI 1030 ASSN STD SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 3.622 INCHES MINIMUM AND 3.626 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 32 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 0.406 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.718 INCHES NOMINAL AA END IN |
| Keyway Width | 0.187 INCHES NOMINAL IN |
| Bore Diameter | 0.625 INCHES NOMINAL IN |
| Material | STEEL COMP 1030 |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.141 INCHES MINIMUM AND 0.168 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 3532X5/8 PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| Reference | Meaning |
|---|---|
| FB332 5-8 | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
| 35B32 5-8 | 5/9 Secondary reference Emerson Electric Co Browning Mfg Div |
NSN 3020-00-451-0257 is a Sprocket Wheel, manufactured by Emerson Electric Co Browning Mfg Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-451-0257 has 1 manufacturer part number on file: 3532X5/8 (Emerson Electric Co Browning Mfg Div).
Key specifications for 3532X5/8: Hub Outside Diameter: 2.500 INCHES NOMINAL AA END IN; Securing Method: SETSCREW; Bore Length: 0.875 INCHES NOMINAL IN; Design Form: PLAIN. 25 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.