براغي ذات رأس أسطواني M4-0.7 × 50 مم | رأس كروي محرك سداسي | ملولبة بالكامل | فولاذ مقاوم للصدأ 316 (200 / عبوة)

The hex socket drive grips the Allen key perfectly, so no stripping even when I torqued them into a tight jig assembly. The full threading along all 50mm makes spacing adjustments effortless, and the 316 finish looks clean against the aluminum frame.

The 316 stainless is the real deal here—I’m using these on a saltwater jig and they haven’t shown a speck of corrosion after a month of spray. The full threading makes grabbing onto thin plates a breeze, and all 200 arrived uniform with no burrs.

The hex socket drive is cleanly machined, so my Allen wrench seated perfectly and I didn’t strip a single head. These fully threaded M4s in 316 stainless held up well on a prototype frame I’ve been bolting and unbolting all week.