PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include angle: 30.0 DEGREES, wheel_style: SPECIAL "ZB", hole_diameter: 0.750 INCHES NOMINAL IN, wheel_diameter: 2.750 INCHES NOMINAL IN, mounting_method: THREADED INSERT, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-244-9861, 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.
| angle | 30.0 DEGREES |
| wheel_style | SPECIAL "ZB" |
| hole_diameter | 0.750 INCHES NOMINAL IN |
| wheel_diameter | 2.750 INCHES NOMINAL IN |
| mounting_method | THREADED INSERT |
| thread_direction | RIGHT-HAND |
| overall_thickness | 2.312 INCHES NOMINAL IN |
| end_item_identification | VALVE SEAT GRINDING |
| thread_size_and_series/type_designator | 0.875-14 UNIFIED NATIONAL COARSE (UNC) |
| NSN | 3020-00-244-9861 |
| PITCH DIAMETER | 2.7500 INCHES NOMINAL IN |
| NOMINAL OUTSIDE DIAMETER | 3.1475 INCHES IN |
| FACE NOMINAL WIDTH | 3.499 INCHES IN |
| HELIX ANGLE | 10.0000 DEGREES |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| TOOTH FORM | STANDARD |
| STYLE DESIGNATOR | HUBLESS |
| TEETH TYPE | SINGLE HELIX |
| HARDNESS RATING | 27.0 ROCKWELL C NOMINAL OVERALL |