The Gear,spur, cataloged under National Stock Number 3020-00-239-1093, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-239-1093 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.3760 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.7190 INCHES FIRST END IN |
| Teeth Quantity | 120 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN AND 1 THREADED AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.4370 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Mounting Hole Nominal Diameter | 0.1250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-764,,COND A-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.4990 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Mounting Hole Nominal Thread Size | 0.1250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 2.5390 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.1250 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 |
| Reference | Meaning |
|---|---|
| 277-141-028 | 5/9 Secondary reference U.S. Government activity |
| 277-141-028 | 3/9 Design control — primary reference Recon/optical, Inc. |
NSN 3020-00-239-1093 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-239-1093: Bore Nominal Diameter: 0.3760 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.7190 INCHES FIRST END IN; Teeth Quantity: 120; Body Style: PLAIN, SOLID. 22 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.