Straight Pin, Fastening in Concrete and Structural Steel Applications Application, PK 100/ HEAD DIAMETER: 0.300 INCHES NOMINAL SHANK LENGTH: 3.000 INCHES NOMINAL SHANK DIAMETER: 0.145 INCHES NOMINAL MATERIAL FOR WHICH DESIGNED: CONCRETE AND STEEL HARDNESS RATING: 52.0 ROCKWELL C MINIMUM INNER PIN AND 56.0 ROCKWELL C MAXIMUM PART NAME ASSIGNED BY CONTROLLING AGENCY: DRIVE PIN;FASTENER PIN,3 IN,POWDER TOOL MATERIAL: STEEL COMP 1060 INNER PIN AND STEEL COMP 1061 AND STEEL COMP 1064 AND STEEL COMP 1065 STYLE DESIGNATOR: P239 GUIDED OR POWDER ACTUATED