The Gear,spur, cataloged under National Stock Number 3020-00-971-5251, 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 Rockford Powertrain Inc Div Powertrain Rockford, Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-971-5251 |
| Primary Part Number | C302903 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.095 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.563 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.230 INCHES BOTH ENDS IN |
| Teeth Quantity | 39 |
| Surface Treatment Document and Classification | MIL-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Style Designator | FLUSH HUB |
| Material Document and Classification | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 6.830 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.340 INCHES BOTH ENDS IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1211 OVERALL |
| Face Nominal Width | 0.500 INCHES 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 |
|---|---|
| C302903 | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| Reference | Meaning |
|---|---|
| XV09-003-41 | 3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo |
| B8005-09-009FN22 | 5/2 Secondary reference U.S. Government activity |
| C8004-09-003FN41 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-971-5251 is a Gear,spur, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-971-5251 has 1 manufacturer part number on file: C302903 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.).
Key specifications for C302903: Keyway Nominal Width: 0.095 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.563 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.230 INCHES BOTH ENDS IN; Teeth Quantity: 39. 18 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.