3/4 HEX SOCKET SHOULDER SCREW3/4 HEX SOCKET SHOULDER SCREW 74071,10 PER BOX,3.50"LENGTH UNDER HEAD, 5/8-11, 3/8 HEX KEY 3/4" Nominal Shoulder Dia., 3-1/2" Shoulder Length, 1.00"-.977" Max/Min Head Dia., .500"-.490" Max/Min Head Hgt., 3/8" Hex Socket Key Size, 5/8-11 Basic Thread Size, .875" Thread Length. These are a socket head shoulder screws, but they are also called shoulder bolts or stripper bolts, and are made to ASME B18.3 Standards. They have a tensile strength of 140,000 PSI minimum in the shoulder and thread neck area. They also have a minimum of 84,000 PSI shear strength in the thread neck area. And they have a broad Rockwell "C" hardness of 32-43 on the surface. These bolts are for rotation or sliding applications, such as pulley shafts, die making, punch design, bearing pins and especially in pivot point area's.
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