66391: ADAPTER,STRAIGHT,FLANGE TO PIPE.
ADAPTER,STRAIGHT,FLANGE TO PIPE. Key specifications include material: ALUMINUM ALLOY OVERALL, body_style: PLAIN, SOLID, body_width: 4.250 INCHES NOMINAL IN, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, body_height: 5.125 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 3020-00-148-3457, 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 | ALUMINUM ALLOY OVERALL |
| body_style | PLAIN, SOLID |
| body_width | 4.250 INCHES NOMINAL IN |
| bore_style | PLAIN BOTH ENDS |
| tooth_form | STANDARD |
| body_height | 5.125 INCHES NOMINAL IN |
| body_length | 4.625 INCHES NOMINAL IN |
| flange_shape | HEXAGON WITH HOLES SECOND END |
| inclosure_type | HERMETICALLY SEALED |
| pitch_diameter | 0.4159 INCHES MINIMUM AND 0.4166 INCHES MAXIMUM IN |
| pressure_angle | 20.0000 DEGREES |
| teeth_quantity | 20 |
| NSN | 3020-00-148-3457 |
| BORE NOMINAL DIAMETER | 0.125 INCHES BOTH ENDS IN |
| HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END IN |
| TEETH QUANTITY | 20 |
| BODY STYLE | PLAIN, SOLID |
| BORE STYLE | PLAIN BOTH ENDS |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.187 INCHES FIRST END IN |
| PRECISION CLASSIFICATION | QUALITY NUMBER 12 |
| STYLE DESIGNATOR | PROTRUDING HUB |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| PITCH DIAMETER | 0.4159 INCHES MINIMUM AND 0.4166 INCHES MAXIMUM IN |