The 638-20528 is a the manufacturer industrial component. Key specifications include movement_type: MOVING COIL, PERMANENT MAGNET, indicator_type: DIAL W/POINTER, overall_length: 2.000 INCHES NOMINAL IN, overall_diameter: 3.500 INCHES NOMINAL IN, special_features: RUGGEDIZED, style_designator: ROUND FLUSH MTG. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-181-4103, 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.
| movement_type | MOVING COIL, PERMANENT MAGNET |
| indicator_type | DIAL W/POINTER |
| overall_length | 2.000 INCHES NOMINAL IN |
| overall_diameter | 3.500 INCHES NOMINAL IN |
| special_features | RUGGEDIZED |
| style_designator | ROUND FLUSH MTG |
| features_provided | ZERO ADJUSTER |
| installation_design | PANEL |
| mounting_hole_diameter | 0.143 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| environmental_protection | SHOCK RESISTANT AND VIBRATION RESISTANT |
| panel_for_which_designed | NONMAGNETIC |
| mounting_arrangement_style | THREE HOLE/STUD BOLT CIRCLE |
| NSN | 6625-01-181-4103 |
| MOUNTING ARRANGEMENT STYLE | THREE HOLE/STUD BOLT CIRCLE |
| OVERALL DIAMETER | 3.500 INCHES NOMINAL IN |
| INSTALLATION DESIGN | PANEL |
| METER BODY DIAMETER BEHIND MOUNTING FLANGE | 2.670 INCHES NOMINAL IN |
| METER DEPTH BEHIND MOUNTING FLANGE | 1.200 INCHES MAXIMUM IN |
| STYLE DESIGNATOR | ROUND FLUSH MTG |
| OVERALL LENGTH | 2.000 INCHES NOMINAL IN |
| ENVIRONMENTAL PROTECTION | SHOCK RESISTANT AND VIBRATION RESISTANT |
| FEATURES PROVIDED | ZERO ADJUSTER |
| INDICATOR TYPE | DIAL W/POINTER |