براغي رأس سداسية 1/4-28 × 3-1/4" | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولبة جزئياً (100/عبوة)

These fit perfectly on my milling machine’s T-slots and the hex heads grab a socket without slipping. The yellow zinc finish looks clean and should resist rust well. A solid buy for anyone needing strong, partially threaded fasteners.

It took me a while to find partially threaded screws in this exact size, and these fit the bill perfectly. The hex heads seated cleanly into my socket without any stripping.

The yellow zinc finish looks sharp and the partial threading gives just the right amount of grip for my equipment jig. Head fits a standard socket perfectly, and all 100 arrived without a single stripped thread.