The Gear,spur, cataloged under National Stock Number 3020-01-406-8887, 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 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-406-8887 |
| Primary Part Number | 6181455 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.560 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.880 INCHES FIRST END IN |
| Teeth Quantity | 14 |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE SECOND END |
| Bore Style | PLAIN FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 1.000 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.350 INCHES FIRST END IN |
| First Step Nominal Length | 0.090 INCHES SECOND END IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS5659 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5862 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.7500 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.230 INCHES SECOND END IN |
| Hub Style Designator | PLAIN FIRST END |
| Hub Style Designator | 1 STEP SECOND END |
| Spline Quantity | 15 FIRST END |
| End Nominal Length | 0.910 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.995 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| End Nominal Diameter | 0.874 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP XM-12 OVERALL |
| Spline Pitch Diameter | 0.4688 INCHES NOMINAL FIRST END IN |
| Face Nominal Width | 0.290 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 |
|---|---|
| 6181455 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3020-01-406-8887 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-406-8887 has 1 manufacturer part number on file: 6181455 (Naval Sea Systems Command).
Key specifications for 6181455: Bore Nominal Diameter: 0.560 INCHES FIRST END IN; Hub Nominal Diameter: 0.880 INCHES FIRST END IN; Teeth Quantity: 14; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 26 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.