Knurled screw
Phillips slotted carbon steel zinc coating knurled screw
Phillips slotted carbon steel zinc coating knurled ...
China precision fastener long cap head knurled thumb screw
China precision fastener long cap head knurled thum...
Made in China Precision Slotted Knurled Thumb Screws
Made in China Precision Slotted Knurled Thumb ...
Flat Head Torx Half Machine Thread Knurled Screw
Flat Head Torx Half Machine Thread Knurled ...