1/4-20 × 1/2" براغي ذات رأس مقبس سداسي مسطح | حبيبات نايلون | كاملة الخيوط | سبيكة فولاذ معالجة حرارياً باللون الأسود (100/عبوة)

Finally a pack of these that actually has consistent thread depth across all the screws. The hex socket engages perfectly without a wobble, which makes setting them in a jig plate much faster than usual.

Used these to rebuild a worn-out fixture on my mill and the black oxide finish slid into the tapped holes smoother than I expected. The nylon pellet held tight even after a few hard cranks with the hex wrench, so I didn't have to re-torque anything mid-run. Great value for a hundred of them, too.

The nylon pellet locking feature is a game-changer—these screws stay put even with vibration on my drill jig. Finished a whole fixture build using just one pack, and the black oxide coating looks clean and resists oil stains perfectly.