The Gear,spur, cataloged under National Stock Number 3020-00-653-2111, 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 Grimes Aerospace Company. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-653-2111 |
| Primary Part Number | A9401A1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.356 INCHES FIRST END IN |
| Teeth Quantity | 22 |
| Clamping Surface Nominal Length | 0.068 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.241 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.4553 INCHES MINIMUM AND 0.4583 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Nominal Outside Diameter | 0.498 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Face Nominal Width | 0.109 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 |
|---|---|
| A9401A1 PRIMARY | Grimes Aerospace Company (USA) |
NSN 3020-00-653-2111 is a Gear,spur, manufactured by Grimes Aerospace Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-653-2111 has 1 manufacturer part number on file: A9401A1 (Grimes Aerospace Company).
Key specifications for A9401A1: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.356 INCHES FIRST END IN; Teeth Quantity: 22; Clamping Surface Nominal Length: 0.068 INCHES FIRST END IN. 15 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.