74646: 74646.
The 74646 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL, nut_style: SLEEVE, nut_length: 0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, nut_diameter: 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF. This part is cataloged in the U.S.
Government catalog under NSN 5310-00-070-6879, 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 4340 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL |
| nut_style | SLEEVE |
| nut_length | 0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| nut_diameter | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| thread_class | 3B |
| thread_series | UNF |
| hardness_rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| flange_thickness | 0.340 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND |
| countersink_angle | 90.0 DEGREES NOMINAL NUT |
| surface_treatment | COPPER ALLOY OVERALL |
| nominal_thread_size | 0.375 INCHES IN |
| NSN | 5310-00-070-6879 |
| FLANGE WIDTH ACROSS FLATS | 0.560 INCHES NOMINAL IN |
| NUT LENGTH | 0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ILYC 101,FSCM 80254 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| FLANGE THICKNESS | 0.340 INCHES NOMINAL IN |
| THREAD SERIES | UNF |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD 1ST MATERIAL RESPONSE OR AMS AMS 6320 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.375 INCHES IN |
| NUT DIAMETER | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
No substitute or cross-reference records for this part.