The Sprocket Wheel, cataloged under National Stock Number 3020-00-289-7929, 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 Circor Pumps North America Llc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-289-7929 |
| Primary Part Number | SG2274PC57 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Hub Outside Diameter | 3.625 INCHES NOMINAL BOTH ENDS IN |
| Bore Length | 1.875 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Tooth Pitch | 1.000 INCHES NOMINAL IN |
| Asa Standard Chain Number | 80-2 |
| Outside Diameter | 11.718 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | MIL-S-16788 MIL SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 11.156 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 2 |
| Teeth Quantity Per Row | 35 |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 1.333 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.023 INCHES NOMINAL BB END IN |
| Distance From Hub End to Flange End | 0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM AA END IN |
| Center to Center Distance Between Teeth Rows | 1.153 INCHES NOMINAL IN |
| Keyway Width | 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Bore Diameter | 2.1660 INCHES MINIMUM AND 2.1665 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1020 OR STEEL COMP 1030 OR STEEL COMP 1040 OR STEEL COMP 1050 OR STEEL COMP 1060 OR STEEL COMP 1080 OR STEEL COMP 1095 |
| Furnished Items | KEYING FACILITY |
| Face Width | 1.770 INCHES MINIMUM AND 1.798 INCHES MAXIMUM 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 |
|---|---|
| SG2274PC57 PRIMARY | Circor Pumps North America Llc (USA) |
| S825KA PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| CA139S4501-903703PC57 | 3/2 Design control — primary reference U.S. Government activity |
| S825KA | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2274PC57 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-289-7929 is a Sprocket Wheel, manufactured by Circor Pumps North America Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-289-7929 has 2 manufacturer part numbers on file: SG2274PC57 (Circor Pumps North America Llc), S825KA (Circor Pumps North America Llc).
Key specifications for SG2274PC57: Hub Outside Diameter: 3.625 INCHES NOMINAL BOTH ENDS IN; Bore Length: 1.875 INCHES NOMINAL IN; Design Form: WEBBED; Tooth Pitch: 1.000 INCHES NOMINAL IN. 24 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.