HOLO-KROME 60018 #5-40 X 5/8" براغي ذات رأس مقبس | رأس مسطح بمحرك سداسي | سبيكة فولاذ أكسيد أسود حراري (100 / عبوة)

The black oxide finish on these screws is extremely consistent across all 100 pieces, and they threaded perfectly into my jig fixture without any binding. Exactly the precision I needed for a tight assembly tolerance.

Finally found flat head #5-40 screws in 5/8" length that aren't stripped or missing threads. The black oxide finish makes them easy to grip in tight spaces, and they seated flush in my precision assembly without any wobble.

Used these to repair a jig in my shop and the flat head hex drive made them easy to sink flush. The 5-40 thread cut cleanly into the existing hole without any extra work.