براغي رأس أسطوانية M4-0.7 × 100 مم | محرك سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 مطلي بالزنك (100 / عبوة)

Needed extra-long M4 bolts for a fixture build and these 100mm ones fit perfectly—the hex socket drive made installation a breeze even in tight spots. The Class 12.9 alloy steel feels robust, and the partial threading gave me just the right grip depth.

Used these for mounting a jig plate on my CNC, and the 100mm length was exactly what I needed to reach through the spacer. The zinc plating looks consistent and should hold up fine in my shop.

The hex socket drive seated perfectly with my Allen key, and the 12.9 alloy steel feels rock solid even at this 100mm length. Zinc plating looks uniform across all 100 pieces, no flaking or rough edges. Exactly what I needed for my jig setup.