thumb screw nut. grabcad. thumb screw nut M3, Dia 12mm, Height 7,5mm. Knurled thumb screw. grabcad. Knurled thumb screw. Knurled Thumb Screw M5. grabcad. Knurled Thumb Screw M5. ... I used a M3 metal thread insert. The hole in the middle is 2.6mm, so you can dirctly use an M3 screw, but insert is the better option. ...Print Settings. M3, Pitch 0.5, Sizes: 4,5,6,8,10,12,16,20,25 mm ... Learn about the GrabCAD Platform. Get to know GrabCAD as an open software platform for Additive Manufacturing. Visit our new homepage. Shop; Partner Program; Print; Workbench ... M3 Hex Socket Screw M3 Hex Socket Screw / Loading ... M3x4.JPG. jpg. November 19th, 2017.