The Gear,spur, cataloged under National Stock Number 3020-01-300-0183, 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 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-300-0183 |
| Primary Part Number | 704-5858418 ITEM 6 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Hub Nominal Diameter | 1.997 INCHES FIRST END IN |
| Teeth Quantity | 12 |
| Second Step Nominal Diameter | 3.246 INCHES SECOND END IN |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH FACE |
| Mounting Hole Type and Quantity | 1 PLAIN AXIALLY THROUGH HUB SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 1.310 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 10.630 INCHES SECOND END IN |
| First Step Nominal Length | 3.360 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.250 INCHES AXIALLY THROUGH HUB SECOND END IN |
| Mounting Hole Nominal Diameter | 0.250 INCHES TRANSVERSELY THROUGH FACE IN |
| Second Step Nominal Length | 5.360 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | ASTM-A564 ASSN STD 1ST MATERIAL RESPONSE AND AMS5643(H100) COND A ASSN STD 2ND MATERIAL RESPONSE AND MIL-C-24111 COND 3 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.0000 INCHES NOMINAL IN |
| First Step Nominal Diameter | 2.750 INCHES SECOND END IN |
| Hub Style Designator | 2 STEPS SECOND END |
| Hub Style Designator | PLAIN FIRST END |
| End Nominal Length | 1.880 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.907 INCHES IN |
| End Nominal Diameter | 1.998 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 3.500 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 |
| Part Number | Manufacturer |
|---|---|
| 704-5858418 ITEM 6 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5858418 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2175-7 ITEM 6 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3020-01-300-0183 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-300-0183 has 1 manufacturer part number on file: 704-5858418 ITEM 6 (Naval Sea Systems Command).
Key specifications for 704-5858418 ITEM 6: Hub Nominal Diameter: 1.997 INCHES FIRST END IN; Teeth Quantity: 12; Second Step Nominal Diameter: 3.246 INCHES SECOND END IN; Body Style: PLAIN, SOLID. 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.