The Gear,spur, cataloged under National Stock Number 3020-00-690-3397, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-690-3397 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 38 |
| Body Style | PLAIN, SOLID |
| Bore Style | TAPERED SECOND END |
| Mounting Hole Type and Quantity | 1 PLAIN AND 2 THREADED AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.266 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS |
| Taper Major Nominal Diameter | 1.427 INCHES SECOND END IN |
| Pitch Diameter | 2.3750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Features Provided | CASEHARDENED |
| Mounting Hole Nominal Thread Size | 0.250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 2.493 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ZINC ALLOY OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.500 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 |
|---|---|
| T101529 | 3/9 Design control — primary reference Stone Safety Corp |
NSN 3020-00-690-3397 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-690-3397: Teeth Quantity: 38; Body Style: PLAIN, SOLID; Bore Style: TAPERED SECOND END; Mounting Hole Type and Quantity: 1 PLAIN AND 2 THREADED AXIALLY THROUGH BODY FIRST END. 17 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.