30pcs Knurled Thumb Screws M3 X 10mm Flat Knurled Head Fully Threaded Carbon Ste
30pcs Knurled Thumb Screws, M3 x 10mm Flat Knurled Head Fully Threaded, Carbon Steel Galvanized (Double Layer Step). Flat knurled head double layer step thumb screw -M3 x 10mm. – M3 x 10mm – 30pcs. Flat Knurled Head Fully Threaded Thumb Screws Bolts Fastener (Double Layer Step).