براغي رأس أسطواني 9/16-18 × 1 بوصة | محرك سداسي داخلي | سبيكة فولاذ مطلية بالزنك (50 / عبوة)

Swapped out some old bolts on a jig I'm rebuilding and these alloy steel screws are noticeably more solid than what I had before. The zinc plating looks clean and even, no rough edges on the threads.

The hex socket drive sits deep and true, so my Allen key gripped cleanly on every single one of the fifty. Used them to bolt down a jig plate this morning and they torqued in without a hint of stripping.

These bolts fit perfectly into my jig setup, and the hex socket drive made tightening them in tight spots much easier than a standard hex head would have. The zinc plating seems like it'll hold up well to occasional oil and moisture in my shop.