The GUIDE,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8637 OR STEEL COMP 8640, thread_class: 3A NUT THREAD A, thread_length: 0.688 INCHES NOMINAL STUD THREAD IN, overall_length: 3.750 INCHES NOMINAL IN, hardness_rating: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM, thread_direction: RIGHT-HAND NUT THREAD. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3530-00-490-8309, 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 8637 OR STEEL COMP 8640 |
| thread_class | 3A NUT THREAD A |
| thread_length | 0.688 INCHES NOMINAL STUD THREAD IN |
| overall_length | 3.750 INCHES NOMINAL IN |
| hardness_rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| thread_direction | RIGHT-HAND NUT THREAD |
| nominal_thread_size | 0.438 INCHES NUT THREAD IN |
| thread_pitch_diameters | +0.3930 TO 0.3959 INCHES STUD THREAD IN |
| thread_quantity_per_inch | 14 STUD THREAD |
| thread_series_designator | UNF NUT THREAD |
| NSN | 3530-00-490-8309 |
| GENERAL CHARACTERISTICS ITEM DESCRIPTION | ACCOMMODATES SIZE 27 NEEDLE |
| END ITEM IDENTIFICATION | SINGER CLASS 97 INDUSTRIAL SEWING MACHINE |