براغي رأس سداسي | 3/8-24 X 3-1/4" | فولاذ درجة 5 مجلفن أصفر | ملولبة جزئيًا (50 / عبوة)

The yellow zinc coating on these bolts seems tough and consistent across all fifty of them, and the partial threading made installation into a tapped hole much easier than I anticipated. They're holding my equipment assembly solid with no wobble.

Needed some strong bolts for a heavy duty jig I was building, and these grade 5 cap screws fit perfectly. The hex heads make them easy to drive with a socket.

The partial threading is exactly what I needed for a jig fixture—the smooth shank gives me full engagement where it counts. Tapped them into steel plates with a socket and none stripped, and the yellow zinc finish looks clean on the equipment.