مسامير رأس سداسية مقاس 3/8-16 × 3-1/2 بوصة | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولبة جزئياً (300 / عبوة)

Had to rebuild a piece of farm equipment and these hex heads wrenched in perfectly without stripping. The partial threading made alignment much easier on the thicker brackets. Solid batch of 300 for the price.

Bought these for a trailer hitch project and the partial threading made a big difference in bite depth. The yellow zinc coating looks great and the hex heads fit my socket without slipping.

Used a full box rebuilding a press brake die holder and every single bolt seated cleanly without binding. The yellow zinc coating looks consistent and the partial threads made alignment easier than fully threaded ones.