Hundreds of Metric Flat Head Allen Furniture Screw Bolts with Precise Threads M1.6 up to M64

These screws are inspired by DIN 921 metric flat head allen screws. As I could not find standard dimensions for some of the rarely used screw variants, I decided to complete them with best guess estimations. The longer screws have partial threads. My inproved thread design has an accuracy of 2.5µm and should fit without tolerances. Please print with low layer height, e.g. max. 0.15 mm for a 0.4 mm nozzle.

Please find the respective nuts here: Hundreds of Metric Flat Head Allen Furniture Nuts M1.6 up to M64

My version 2 standard hex nuts also should fit well: Complete Set of Metric Nuts Version 2