براغي رأس أسطواني بمفتاح سداسي M4-0.7 X 20mm | رأس مسطح بمفتاح سداسي | ملولبة بالكامل | فولاذ سبائكي درجة 10.9 مطلي بالزنك (600 / عبوة)

Bought these to replace worn-out screws on a CNC fixture and the 10.9 alloy steel is noticeably tougher than standard hardware—no stripping even under repeated torque. The hex drive seated cleanly without slipping.

Bought these for a batch of jigs after my last lot stripped mid-job, and the Class 10.9 alloy steel feels noticeably sturdier when I’m torquing them down. Full threading and the zinc plating made them slide clean into each hole, no binding. A full box of 600 means I won’t be reordering for a long wh

The hex socket drive on these M4 screws gave me a solid bite without any cam-out while assembling a precision fixture. Zinc coating looks clean and uniform across all 600 pieces, which is exactly what I needed for a consistent build.