RECEIVER SUBASSEMBLY,COUNTERMEAS. Key specifications include material: STEEL COMP 4140 OVERALL, body_style: PLAIN, SOLID, bore_style: W/ KEYWAY BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 1.6430 INCHES NOMINAL IN, pressure_angle: 14.5000 DEGREES. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-399-4571, 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.
| material | STEEL COMP 4140 OVERALL |
| body_style | PLAIN, SOLID |
| bore_style | W/ KEYWAY BOTH ENDS |
| tooth_form | STANDARD |
| pitch_diameter | 1.6430 INCHES NOMINAL IN |
| pressure_angle | 14.5000 DEGREES |
| teeth_quantity | 23 |
| style_designator | HUBLESS |
| face_nominal_width | 0.626 INCHES IN |
| keyway_nominal_width | 0.127 INCHES BOTH ENDS IN |
| bore_nominal_diameter | 0.615 INCHES BOTH ENDS IN |
| nominal_outside_diameter | 1.785 INCHES IN |
| NSN | 3020-00-399-4571 |
| PITCH DIAMETER | 1.6430 INCHES NOMINAL IN |
| MATERIAL | STEEL COMP 4140 OVERALL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 8 |
| BORE NOMINAL DIAMETER | 0.615 INCHES BOTH ENDS IN |
| BORE STYLE | W/ KEYWAY BOTH ENDS |
| NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.385 INCHES BOTH ENDS IN |
| FACE NOMINAL WIDTH | 0.626 INCHES IN |
| STYLE DESIGNATOR | HUBLESS |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PRESSURE ANGLE | 14.5000 DEGREES |