براغي غطاء المقبس M4 × 8 مم | محرك مقبس سداسي مسطح الرأس | فولاذ سبائكي (400/عبوة)

The hex socket drive fits my Allen keys perfectly, and the flat head sits flush on aluminum brackets. These alloy steel screws are holding up great under moderate torque on my workshop jig.

These are exactly what I needed for my jig setup—all 400 screws have clean threads and the hex sockets are sharp, so the Allen key bites right in without stripping. The alloy steel feels plenty tough for the torque I'm applying.

Finally found a pack of M4 flat heads that don't strip on the first torque. The hex socket drive seated perfectly into my jig’s recessed holes, and the alloy steel feels sturdy enough for repeated use. Solid buy for 400 pieces.