403890: 403890.
The 403890 is a the manufacturer industrial component. Key specifications include material: COPPER FIRST MORTISE, conductor_form: STRANDED ALL CONDUCTORS, fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT, cross-sectional_shape_style: ROUND, conductor_arrangement_and_quantity: 4 SINGLES. This part is cataloged in the U.S.
Government catalog under NSN 5305-00-071-2077, 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 | COPPER FIRST MORTISE |
| conductor_form | STRANDED ALL CONDUCTORS |
| conductor_quantity | 4 |
| fsc_application_data | TELETYPE AND FACSIMILE EQUIPMENT |
| cross-sectional_shape_style | ROUND |
| conductor_arrangement_and_quantity | 4 SINGLES |
| NSN | 5305-00-071-2077 |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| FASTENER LENGTH | 3.500 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THREAD LENGTH | 1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES IN |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| WIDTH BETWEEN FLATS | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |