The Gear,spur, cataloged under National Stock Number 3020-01-021-9466, 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 Aimtron Systems, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-021-9466 |
| Primary Part Number | 503774 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.183 INCHES FIRST END IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 124 |
| Clamping Surface Nominal Length | 0.156 INCHES FIRST END IN |
| Surface Treatment Document and Classification | MIL-C-5541,TYPE 1,GRADE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE HUB |
| Surface Treatment Document and Classification | MIL-C-5541,TYPE 1,GRADE A,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.186 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-250/11,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.9375 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Nominal Outside Diameter | 1.966 INCHES IN |
| Surface Treatment | OXIDE FILM BODY |
| Surface Treatment | OXIDE FILM HUB |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.095 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 |
|---|---|
| 503774 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 503774 | 5/9 Secondary reference Cardion Inc |
NSN 3020-01-021-9466 is a Gear,spur, manufactured by Aimtron Systems, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-021-9466 has 1 manufacturer part number on file: 503774 (Aimtron Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 1660-01-501-0641. Verify interchangeability with system specifications before substitution.
Key specifications for 503774: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.183 INCHES FIRST END IN; Backlash Designation: GRADE C; Teeth Quantity: 124. 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.