20 Pcs M4 X 10 Mm Threaded Knurled Thumbscrew, Monitor Screws Vesa Mount Screws

10 Pcs M6 X 25Mm Thumb Screw Threaded Knurled Replacement Star Hand Knob

10 Pcs M6 X 25Mm Thumb Screw Threaded Knurled Replacement Star Hand Knob Clampin

YFS Steel Knurled Hex Socket Head Fully Threaded Screw FNIP

#8-32 x 1-1/4" Thumb Screw Stainless Steel - Black Round Knurled Knob - USA

#6-32 x 1/2" Thumb Screw Stainless Steel - Gray Round Knurled Knob - USA

#10-32 x 1/2" Thumb Screw Stainless Steel - Black Round Knurled Knob - USA

#10-32 x 1/4" Thumb Screw Stainless Steel - Black Round Knurled Knob - USA