M5 X 50mm براغي تثبيت ذات تجويف سداسي بنقطة كوبية | سبائك الصلب مطلي بالزنك (1000/عبوة)

The cup point really bites into the shaft, which was perfect for locking down a pulley without it slipping. I bought these for a small gear assembly and the zinc plating seems like it'll hold up well. Pack of a thousand is way more than I needed, but the price per screw makes it worth buying in bulk

Used a dozen of these to secure a pulley to a shaft, and the zinc plating held up nicely against a bit of moisture in the garage. The socket drive made installation easy with a hex key, and for the price, having a full thousand screws is great for future projects.

The 1000-pack count is perfect for my workshop, and the zinc plating gives these set screws a nice corrosion resistance. They fit my collars and pulleys securely without any wobble during operation.