PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include weight: 38.000 OUNCES OZ, diameter: 4.250 INCHES NOMINAL IN, material: ALUMINUM, head_style: FLAT, oil_groove: NOT INCLUDED, skirt_type: SOLID. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-388-7852, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| weight | 38.000 OUNCES OZ |
| diameter | 4.250 INCHES NOMINAL IN |
| material | ALUMINUM |
| head_style | FLAT |
| oil_groove | NOT INCLUDED |
| skirt_type | SOLID |
| carbon_groove | NOT INCLUDED |
| overall_height | 4.500 INCHES NOMINAL IN |
| surface_finish | FINISHED |
| pin_hole_bushing | NOT INCLUDED |
| pinhole_diameter | 0.9995 INCHES MINIMUM AND 0.9998 INCHES MAXIMUM IN |
| ring_groove_width | 0.1880 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM THIRD RING IN |
| NSN | 2805-00-388-7852 |
| HEAD STYLE | FLAT |
| FINISHED SIZE DESIGNATION | STANDARD |
| WEIGHT | 38.000 OUNCES OZ |
| RING GROOVE DIAMETER | 3.861 INCHES MINIMUM AND 3.875 INCHES MAXIMUM SECOND RING IN |
| RING GROOVE WIDTH | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM SECOND RING IN |
| DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 2.344 INCHES NOMINAL IN |
| PIN | NOT INCLUDED |
| PIN HOLE BUSHING | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE,NON-AIRCRAFT |
| RING GROOVE WIDTH | 0.1575 INCHES MINIMUM AND 0.1585 INCHES MAXIMUM FIRST RING IN |