براغي M2-0.4 × 25مم رأس أسطواني داخلي | محرك سداسي داخلي | فولاذ سبائكي فئة 12.9 مطلي بالزنك (100/عبوة)

The threads are clean and the hex socket drives perfectly with my 1.5mm Allen key—no stripped heads after assembling three jigs. For 12.9-grade alloy steel at this price, you can't beat the strength-to-cost ratio.

Was a bit worried about fit with such small screws, but the hex socket drive made installation on my jig assembly incredibly easy. The zinc plating looks clean and uniform across all 100 pieces.

Installed these in a small precision fixture and the 12.9 grade held torque perfectly without any stripping. The zinc plating adds a nice corrosion resistance for the shop environment.