The Gear,spur, cataloged under National Stock Number 3020-00-342-5875, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-342-5875 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.186 INCHES FIRST END IN |
| Teeth Quantity | 184 |
| Surface Treatment Document and Classification | MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.063 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.383 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.085 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Overall Length | 0.508 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | QQ-A-250/4,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Pitch Diameter | 2.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | 1 GROOVE FIRST END |
| Surface Treatment | CHROMIUM OVERALL |
| Nominal Distance From End to First Groove | 0.039 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | STEEL COMP 303 HUB |
| First Groove Nominal Diameter | 0.148 INCHES FIRST END IN |
| First Groove Nominal Width | 0.030 INCHES FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.080 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 |
|---|---|
| B15165GP1 | 3/9 Design control — primary reference Barker & Williamson |
| SMB185080 | 5/2 Secondary reference U.S. Government activity |
| B15165GP1 | C/1 Advisory reference — outside the item-of-supply concept Smart Machines, Inc. Dba Barker and Williamson |
NSN 3020-00-342-5875 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-342-5875: Bore Nominal Diameter: 0.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.186 INCHES FIRST END IN; Teeth Quantity: 184; Surface Treatment Document and Classification: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.