The Gear,spur, cataloged under National Stock Number 3020-00-922-0086, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-922-0086 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.952 INCHES BOTH ENDS IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 120 |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.418 INCHES FIRST END IN |
| First Step Nominal Length | 0.313 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Mounting Hole Nominal Diameter | 0.078 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.7490 INCHES MINIMUM AND 3.7500 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 3.500 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| End Nominal Length | 0.105 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.812 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| End Nominal Diameter | 3.250 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.312 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 |
|---|---|
| SMC587476 | 3/2 Design control — primary reference U.S. Government activity |
| SM-C-587476 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-922-0086 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-922-0086: Bore Nominal Diameter: 2.952 INCHES BOTH ENDS IN; Backlash Designation: GRADE C; Teeth Quantity: 120; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 25 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.