براغي ماكينة 1/4-20 × 4 بوصة | رأس ترس بمحرك شق | فولاذ مطلي بالزنك (200 / عبوة)

Finally found some 4-inch machine screws that fit my panel-mounting jig perfectly; the slotted truss heads seat nicely without cam-out. They were all straight and clean-threaded right out of the box, which saved me a ton of frustration.

Zinc plating looks clean and consistent across all 200 pieces, and the truss heads seated flush against my metal enclosure panels without any binding. The slotted drive took a bit of patience with a screwdriver, but for the price per unit these are a solid value for general hardware duty.

Worked perfectly for mounting a truss to a panel in my garage—the zinc coating seems decent and the threads cut cleanly. Just wish the slotted head was a bit deeper for a better grip with my driver.