مسامير رأس مقبس M4-0.7 × 30 مم | رأس مسطح محرك سداسي | مدورة جزئياً | فولاذ سبائك كلاس 10.9 مطلي بالزنك (400/عبوة)

The hex socket drive on these really grips the Allen key without stripping, even when I'm tightening them into jig fixtures. They're consistent in length and the zinc coating looks clean and uniform across the whole box.

I needed a solid batch of M4 screws for some jig fixtures, and these 30mm ones with the hex socket drive held up perfectly under torque. The zinc plating looks consistent across all 400 pieces, which saved me time during assembly.

The partially threaded design worked perfectly for my jig setup, giving the clamping force I needed without stripping threads. These feel much stronger than the stainless ones I used before, and the zinc plating looks clean.