The RETAINER,SHAFT,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, bore_diameter: 0.625 INCHES NOMINAL IN, coil_quantity: 30, inside_diameter: 0.390 INCHES NOMINAL IN, style_designator: CYLINDRICAL. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3950-00-538-0339, 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 OVERALL |
| end_style | SPRING END,SQUARED AND GROUND BOTH ENDS |
| bore_diameter | 0.625 INCHES NOMINAL IN |
| coil_quantity | 30 |
| inside_diameter | 0.390 INCHES NOMINAL IN |
| style_designator | CYLINDRICAL |
| spring_free_length | 4.200 INCHES NOMINAL IN |
| spring_solid_length | 2.700 INCHES MAXIMUM IN |
| coil_helix_direction | RIGHT-HAND OR LEFT-HAND |
| spring_deflection_rate | 30.000 POUNDS PER INCH NOMINAL LBS |
| spring_free_outside_diameter | 0.570 INCHES NOMINAL IN |
| NSN | 3950-00-538-0339 |
| END ITEM IDENTIFICATION | NORTHERN LINE MACHINE AND ENGINEERING CO MODEL 3230HSPC |
| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,AISI 4140; INTERNALLY SPLINED; INVOLUTE SPLINES; 54 TEETH; 30 DEG PRESSURE ANGLE; 5.680 IN. MIN 5.695 IN. MAX MAJOR DIA; 5.312 IN. MIN 5.322 IN. MAX MINOR DIA; THREE O-RING PORTS THD 9/16-18 UNF-2B; TWELVE HOLES 0.750 IN. DIA BY 0.750 IN. DEEP EQUALLY SPACED ON 4.375 IN. BOLT CIRCLE DIA; EIGHT THRU HOLES 0.406 IN. DIA IRREGULARITY SPACED ON 6.375 IN. BOLT CIRCLE DIA IN |