Knife Making Screws by Thread Size and Head Style
Shop knife making screws in six inch threads, 0-80 through 8-32, and two metric sizes, 2.5mm and 3mm, plus stainless set screws. Most are Torx flat, button and socket heads, with Phillips heads in some sizes and stainless, black, TiNi gold and titanium choices for folders, pocket clips and knife handles.
On a folder, the small threads fasten liners, scales, pivots and clips. 0-80 screws come as Torx flat, button and socket heads in 25-packs, in plain stainless or TiNi black and gold, with a 0-80UNF tap and drill set to thread the holes. 1-72 screws add a Phillips button head and a titanium socket head from CKK Design, and 2-56 screws cover T-6, T-8 and T-9 stainless, an SK Design titanium shallow socket head and CKK Alien designer heads. Both pages also list a knurled faux screw for fixing stripped threads.
In metric, the 2.5mm screws are 2.5 x 0.45 socket and button heads with a T6 Torx drive for folding knives and pocket clips, and the 3mm screws are a 25-pack of polished 302HQ stainless button heads for clip assembly. 4-40 screws mix stainless Torx heads with a black oxide Phillips flat head and two lines of CKK Design and SK Design titanium for folders and knife handles. The 6-32 screws are USA-made Torx flat, button and socket heads in 25-packs for knife making.
8-32 screws run from a 302HQ Torx button head 25-pack to black oxide steel flat, truss, oval and pan heads sold as a 1-pack, along with CKK Designer Line Chicago screws in Galaxy, Knight's Cross and Spanner designs. Set screws in 4-40 and 6-32 have an internal hex drive for an Allen wrench and suit attaching thumb studs. If you have a knife screw on hand and are unsure of its thread, get in touch and we can point you to the right size.