BACN10HR4: NUT,SELF-LOCKING,EXTENDED WASHER.
NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.280 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.
Government catalog under NSN 5310-01-557-2769, 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 |
| nut_style | DOUBLE HEXAGON |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.280 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.020 INCHES MINIMUM IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.347 INCHES MINIMUM IN |
| counterbore_diameter | 0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM FIRST END IN |
| washer_outside_diameter | 0.438 INCHES MAXIMUM IN |
| thread_quantity_per_inch | 28 |
| NSN | 5310-01-557-2769 |
| OVERALL HEIGHT | 0.280 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| WASHER OUTSIDE DIAMETER | 0.438 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 0.347 INCHES MINIMUM IN |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WASHER THICKNESS | 0.020 INCHES MINIMUM IN |
| THREAD DIRECTION | RIGHT-HAND |
| COUNTERBORE DIAMETER | 0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM FIRST END IN |
| SURFACE TREATMENT | CADMIUM OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,SELF LOCKING,12 POINT, 220 KSI TENSILE, HIGH RELIABILITY, 450 F AND 900 F; BOEING PART STANDARD |
| NUT STYLE | DOUBLE HEXAGON |
No substitute or cross-reference records for this part.