The Gear,bevel, cataloged under National Stock Number 3020-01-124-9138, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-124-9138 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.787 INCHES BOTH ENDS IN |
| Teeth Quantity | 22 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 60.0000 DEGREES |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.330 INCHES SECOND END IN |
| First Step Nominal Length | 0.310 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.470 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | 66AISI/SAE 8620 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.9300 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.250 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP SECOND END |
| End Nominal Length | 0.200 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.950 INCHES IN |
| End Nominal Diameter | 0.980 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Face Nominal Width | 0.440 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 |
|---|---|
| E8979M2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-124-9138 is a Gear,bevel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-124-9138: Bore Nominal Diameter: 0.787 INCHES BOTH ENDS IN; Teeth Quantity: 22; Body Style: PLAIN, SOLID; Pitch Angle: 60.0000 DEGREES. 21 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.