Here's the Amazon Link: https://www.amazon.com/gp/product/B005RTCYP8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Description: 303 Stainless Steel Thumb Screw, Plain Finish, Knurled Head, 11mm Length, Fully Threaded, M5-0.8 Metric Coarse Threads
These are stainless steel and bit expensive...