The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, head_height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 2.188 INCHES NOMINAL IN, screw_material: STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-057-0491, 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.
| head_style | FLAT COUNTERSUNK |
| head_height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| thread_class | 3A A |
| head_diameter | 0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| thread_length | 2.188 INCHES NOMINAL IN |
| screw_material | STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| fastener_length | 2.188 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND |
| countersink_angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| internal_drive_style | CROSS RECESS TYPE 1 |
| end_item_identification | 4920-01-326-7353 |
| nominal_thread_diameter | 0.1900 INCHES IN |
| NSN | 5305-00-057-0491 |
| NOMINAL THREAD DIAMETER | 0.164 INCHES IN |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH LBS |
| SCREW MATERIAL | STEEL COMP 8630 OR STEEL COMP 4037 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE |
| END ITEM IDENTIFICATION | MRAP- COUGAR AMBULANCE |
| SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |