The DUCT ASSEMBLY,HEAT EXCHANGER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8620 OVERALL, bore_style: STRAIGHT SPLINE BOTH ENDS, design_type: SPUR SECOND GEAR, construction: SOLID, hardness_rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL, spline_quantity: 6 BOTH ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-646-7040, 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 8620 OVERALL |
| bore_style | STRAIGHT SPLINE BOTH ENDS |
| design_type | SPUR SECOND GEAR |
| construction | SOLID |
| hardness_rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| spline_quantity | 6 BOTH ENDS |
| special_features | COUNTERBORE 2ND END; 1.635 IN. NOM. DIA;0.218 IN. NOM. DEPT IN |
| hub_nominal_length | 0.125 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| hub_nominal_diameter | 1.750 INCHES FIRST END IN |
| hub_style_designator | PLAIN FIRST END |
| bore_nominal_diameter | 1.562 INCHES BOTH ENDS IN |
| nominal_overall_length | 1.988 INCHES IN |
| NSN | 3020-00-646-7040 |
| HUB STYLE DESIGNATOR | PLAIN BETWEEN FIRST AND SECOND GEAR |
| NOMINAL OUTSIDE DIAMETER | 3.938 INCHES FIRST GEAR IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| DESIGN TYPE | SPUR SECOND GEAR |
| NOMINAL OVERALL LENGTH | 1.988 INCHES IN |
| SPECIAL FEATURES | COUNTERBORE 2ND END; 1.635 IN. NOM. DIA;0.218 IN. NOM. DEPT IN |
| BORE NOMINAL DIAMETER | 1.562 INCHES BOTH ENDS IN |
| HUB NOMINAL DIAMETER | 1.750 INCHES FIRST END IN |
| CONSTRUCTION | SOLID |
| HUB NOMINAL LENGTH | 0.125 INCHES BETWEEN FIRST AND SECOND GEAR IN |