The Gear,spur, cataloged under National Stock Number 3020-00-336-9100, 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 23 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-336-9100 |
| Primary Part Number | S6505-538304ALT1PC43 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.2820 INCHES BOTH ENDS IN |
| Teeth Quantity | 40 |
| Second Step Nominal Diameter | 0.6720 INCHES FIRST END IN |
| Body Style | PLAIN, SOLID |
| Third Step Nominal Diameter | 0.5430 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.4062 INCHES FIRST END IN |
| First Step Nominal Length | 0.2180 INCHES FIRST END IN |
| Second Step Nominal Length | 0.0930 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.7480 INCHES FIRST END IN |
| Hub Style Designator | 3 STEPS FIRST END |
| Mounting Hole Nominal Thread Size | 0.125 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| End Nominal Length | 0.0240 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.6562 INCHES IN |
| End Nominal Diameter | 0.4050 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE |
| Third Step Nominal Length | 0.0650 INCHES FIRST END 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 |
|---|---|
| S6505-538304ALT1PC43 PRIMARY | Naval Sea Systems Command (USA) |
| S6505-538304PC43 | Naval Sea Systems Command (USA) |
| S6505-538303ALT1PC43 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| S6505-538304PC43 | 5/9 Secondary reference U.S. Government activity |
| AA501810 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| S6505-538304ALT1PC43 | 5/9 Secondary reference U.S. Government activity |
| V40256PC43 | 5/9 Secondary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
| S6505-538303ALT1PC43 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-336-9100 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-336-9100 has 3 manufacturer part numbers on file: S6505-538304ALT1PC43 (Naval Sea Systems Command), S6505-538304PC43 (Naval Sea Systems Command), S6505-538303ALT1PC43 (Naval Sea Systems Command).
Key specifications for S6505-538304ALT1PC43: Bore Nominal Diameter: 0.2820 INCHES BOTH ENDS IN; Teeth Quantity: 40; Second Step Nominal Diameter: 0.6720 INCHES FIRST END IN; Body Style: PLAIN, SOLID. 23 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.