The Gear,bevel, cataloged under National Stock Number 3020-01-123-1669, 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25 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-123-1669 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.751 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.117 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 6.000 INCHES SECOND END IN |
| Teeth Quantity | 20 |
| Body Style | WEBBED, OFFSET, SOLID |
| Counterbore Nominal Diameter | 4.000 INCHES COUNTER BORE SECOND END IN |
| Counterbore Nominal Diameter | 7.000 INCHES COUNTERBORE FIRST END IN |
| Pitch Angle | 45.0000 DEGREES |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Bore Style | W/ 2 KEYWAYS BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 5.010 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | MIL-B-24480 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 16.0000 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN SECOND END |
| Nominal Outside Diameter | 17.125 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.888 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY OVERALL |
| Counterbore Nominal Depth | 0.250 INCHES COUNTER BORE SECOND END IN |
| Counterbore Nominal Depth | 0.510 INCHES COUNTERBORE FIRST END IN |
| Face Nominal Width | 3.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 87776-0106 | D/9 Drawing number reference only U.S. Government activity |
| 201-4684481 ITEM 5 | 3/2 Design control — primary reference U.S. Government activity |
| 201-4684481 | D/9 Drawing number reference only U.S. Government activity |
| 87776-0106ITEM5 | 3/2 Design control — primary reference U.S. Government activity |
| 87776-0106 ITEM 5 | 5/9 Secondary reference Drw Mfg Co |
NSN 3020-01-123-1669 is a Gear,bevel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-123-3013, 3020-01-123-3956, 3040-01-123-5723. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-123-1669: Keyway Nominal Width: 0.751 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.117 INCHES BOTH ENDS IN; Hub Nominal Diameter: 6.000 INCHES SECOND END IN; Teeth Quantity: 20. 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.
NSN 3020-01-123-1669 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.