14-10 x 1 1/2 Unslot Ind Hexwasher Self Tapping Screw Type A Full Thread 18-8 Stainless Steel NSTYC It also has a non-serrated

It also has a non-serrated surface

It has a diameter of 1/4 inch and a length of 3 1/4 inches

It is 2 1/4 inches long and has a diameter of 1/4 inch

while the JISB 1111 Class 4

14-10 x 1 1/2 Unslot Ind Hexwasher Self Tapping Screw Type A Full Thread 18-8 Stainless Steel NSTYC It also has a non-serratedThese 14 10 x 1 1 2 inch Unslotted Hex Washer Self Tapping Screws are Type A Full Thread screws made of 18 8 Stainless Steel. They are designed for use in a variety of applications, including metal, plastic, and wood. The hex washer head provides a large bearing surface for increased torque and the self tapping design eliminates the need for pre drilling. These screws are corrosion resistant and have a bright finish.