The Gear,bevel, cataloged under National Stock Number 3020-01-183-4774, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-183-4774 |
| Primary Part Number | 522-4675675ITEM2 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.000 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.497 INCHES SECOND END IN |
| Teeth Quantity | 16 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 45.0000 DEGREES |
| Bore Style | STRAIGHT SPLINE SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 1.002 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.580 INCHES IN |
| Style Designator | SIDE FACE, BACK HUB PROTRUDING |
| Material Document and Classification | MIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.6666 INCHES NOMINAL IN |
| Hub Style Designator | PINNED SECOND END |
| Spline Quantity | 10 SECOND END |
| Nominal Outside Diameter | 2.902 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.620 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 |
| Part Number | Manufacturer |
|---|---|
| 522-4675675ITEM2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 522-4675675 | D/9 Drawing number reference only U.S. Government activity |
| 87643-6903 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-183-4774 is a Gear,bevel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-183-4774 has 1 manufacturer part number on file: 522-4675675ITEM2 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-232-7179, 3020-01-247-2638, 3040-01-248-7280. Verify interchangeability with system specifications before substitution.
Key specifications for 522-4675675ITEM2: Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.497 INCHES SECOND END IN; Teeth Quantity: 16; Body Style: PLAIN, SOLID. 18 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 3020-01-183-4774 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.