Replacing or adding buttons to jeans, jackets, and bags doesn’t have to involve stitching. M Fabrics Jeans Metal Button No-Sew Hammer Tack Snap Buttons are strong, stainless steel fasteners designed for quick installation and long-lasting hold. This guide explains what hammer tack buttons are , where they’re used , and how to install them step by step for a clean, professional finish. What Are No-Sew Hammer Tack Buttons? Hammer tack buttons are two-part metal snap buttons