United Titanium manufactures and inventories flat socket sheet metal screws from #4 to 1/4” diameter. We also offer metric flat socket sheet metal screws upon request. These flat socket sheet metal screws are manufactured to the most recent ASME B18.6.4, IFI, or customer stated standards with thread type AB as our standard. Our inventory is home to thousands of these flat socket sheet metal screws in any of our various materials and sizes.