The 1220B1284-4 is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400, construction: ONE-PIECE, outside_diameter: 4.750 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 2.002 INCHES NOMINAL IN, overall_thickness: 0.015 INCHES NOMINAL IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-01-415-1978, 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 | NICKEL ALLOY 400 |
| construction | ONE-PIECE |
| outside_diameter | 4.750 INCHES NOMINAL IN |
| style_designator | CIRCULAR |
| aperture_diameter | 2.002 INCHES NOMINAL IN |
| overall_thickness | 0.015 INCHES NOMINAL IN |
| bolt_hole_quantity | 4 |
| bolt_circle_diameter | 3.850 INCHES NOMINAL IN |
| largest_bolt_hole_diameter | 0.531 INCHES NOMINAL IN |
| smallest_bolt_hole_diameter | 0.406 INCHES NOMINAL IN |
| smallest_bolt_hole_quantity | 4 |
| material_document_and_classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| NSN | 5365-01-415-1978 |
| STYLE DESIGNATOR | CIRCULAR |
| OVERALL THICKNESS | 0.015 INCHES NOMINAL IN |
| BOLT HOLE QUANTITY | 4 |
| CONSTRUCTION | ONE-PIECE |
| APERTURE DIAMETER | 2.002 INCHES NOMINAL IN |
| MATERIAL | NICKEL ALLOY 400 |
| BOLT CIRCLE DIAMETER | 3.850 INCHES NOMINAL IN |
| SMALLEST BOLT HOLE QUANTITY | 4 |
| SMALLEST BOLT HOLE DIAMETER | 0.406 INCHES NOMINAL IN |
| LARGEST BOLT HOLE DIAMETER | 0.531 INCHES NOMINAL IN |
No verified substitutes available.