The Sprocket Wheel, cataloged under National Stock Number 3020-00-252-5449, 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 Pakon Inc Dba Impak Division. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-252-5449 |
| Primary Part Number | 72-238 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Pakon Inc Dba Impak Division |
| Status | ACTIVE |
| Hub Outside Diameter | 2.000 INCHES NOMINAL AA END IN |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 0.875 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.375 INCHES NOMINAL IN |
| Asa Standard Chain Number | 35 |
| Outside Diameter | 3.190 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 2.992 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 25 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 0.707 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 1 |
| Thread Size | 1/4 IN.-20 THD SIZE IN |
| Hole Location | ON HUB BETWEEN HUB AND FACE |
| Bore Diameter | 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN |
| Material | STEEL |
| Face Width | 0.168 INCHES NOMINAL IN |
| Furnished Items and Quantity | SETSCREW 1 |
| 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 |
|---|---|
| 72-238 PRIMARY | Pakon Inc Dba Impak Division (USA) |
| Reference | Meaning |
|---|---|
| 35B25F1-2B0RE | 5/1 Secondary reference Diamond Chain Co Div of Amsted Industries Inc |
NSN 3020-00-252-5449 is a Sprocket Wheel, manufactured by Pakon Inc Dba Impak Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-252-5449 has 1 manufacturer part number on file: 72-238 (Pakon Inc Dba Impak Division).
9 possible matches (shared part number, not a government interchangeability claim): 2530-00-537-0662, 5331-00-838-6772, 5306-01-689-0030. Verify interchangeability with system specifications before substitution.
Key specifications for 72-238: Hub Outside Diameter: 2.000 INCHES NOMINAL AA END IN; Securing Method: THREADED HOLE(S); Bore Length: 0.875 INCHES NOMINAL IN; Design Form: PLAIN. 23 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.