304 Stainless Steel Chicago Screws | 10 Sets M3 M4 Binding Posts | Leather Book Photo Album Assembly

This 10-set assortment of M3 and M4 binding screws is crafted from durable 304 stainless steel, offering superior corrosion resistance and a professional finish. Designed for precision assembly, these...
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Questions about this product
- What sizes are included, and how thick of a material can they hold?
- This kit contains a 10-set assortment of M3 and M4 thread sizes. The M3 screws typically fit thicknesses from 6 to 20mm, while the M4 screws handle 8 to 25mm. Make sure to measure your total material thickness so you can select the right post length.
- Do I need to tap threads into my leather or paper to install these?
- No, you don't need to thread your materials. Just punch a clean hole matching the M3 or M4 barrel diameter through your layers. Slide the post through, then tighten the slotted screw head using a standard flathead screwdriver.
- Will these screws rust or discolor my leather goods?
- These fasteners are made from 304 stainless steel, which offers high resistance to rust and oxidation. They won't corrode under normal conditions, keeping your leather bags and albums clean and unstained. The natural satin finish provides a professional look that lasts.
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