Unbrako 1104704 Alloy Steel Socket Cap Screw， Black Oxide Finish， Button Head， Hex Socket Drive， Meets ASME B18.3， Right Hand Threads， #4-40 Thread Size， 1/4" Length， Fully Threaded (Pack of 100)<img src="http://ecx.images-amazon.com/images/I/51SYAi0yyeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41cWpo7EjIL.jpg" noproxy>