The Gear,spur, cataloged under National Stock Number 3020-00-557-7530, 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 Meritor Heavy Vehicle Systems, Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-557-7530 |
| Primary Part Number | 3E16194 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Hub Nominal Diameter | 4.119 INCHES FIRST END IN |
| Hub Nominal Diameter | 4.119 INCHES SECOND END IN |
| Teeth Quantity | 48 |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.406 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.969 INCHES SECOND END IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM BODY |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 4.625 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 9.2000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 16 BOTH ENDS |
| Nominal Outside Diameter | 9.483 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Face Nominal Width | 2.250 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 |
|---|---|
| 3E16194 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 5577530 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3E16194 | 5/9 Secondary reference Meritor Heavy Vehicle Systems Llc Off Highway Products and Supply Div Heavy Vehicles Components Opns |
NSN 3020-00-557-7530 is a Gear,spur, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-557-7530 has 2 manufacturer part numbers on file: 3E16194 (Meritor Heavy Vehicle Systems, Llc), 5577530 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 3E16194: Hub Nominal Diameter: 4.119 INCHES FIRST END IN; Hub Nominal Diameter: 4.119 INCHES SECOND END IN; Teeth Quantity: 48; Body Style: WEBBED, OFFSET, WITH LIGHTENING HOLES. 19 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.