CUTTER,MILLING,WOODRUFF KEYSEAT. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 4130, thread_class: 3A NUT THREAD A, thread_length: 0.500 INCHES MINIMUM STUD THREAD IN, overall_length: 1.000 INCHES NOMINAL IN, shank_diameter: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-208-7810, 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 8740 OR STEEL COMP 8630 OR STEEL COMP 4130 |
| thread_class | 3A NUT THREAD A |
| thread_length | 0.500 INCHES MINIMUM STUD THREAD IN |
| overall_length | 1.000 INCHES NOMINAL IN |
| shank_diameter | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| hardness_rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| style_designator | STEPPED |
| thread_direction | RIGHT-HAND NUT THREAD |
| surface_treatment | CADMIUM OVERALL |
| nominal_thread_size | 0.312 INCHES STUD THREAD IN |
| thread_pitch_diameters | +0.2814 TO 0.2834 INCHES STUD THREAD IN |
| cotter_pin_hole_diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| NSN | 5307-00-208-7810 |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 4130 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6324 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6280 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6370 ASSN STD 3RD MATERIAL RESPONSE |
| THREAD CLASS | 3A NUT THREAD A |
| SHANK DIAMETER | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| COTTER PIN HOLE DIAMETER | 0.076 INCHES NOMINAL FIRST HOLE IN |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| STYLE DESIGNATOR | STEPPED |
| THREAD QUANTITY PER INCH | 18 STUD THREAD |
| DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END | 0.094 INCHES NOMINAL FIRST HOLE IN |