Ramset 100 Pack .300" x 3" #1524SDP Drive Pin With Washer. Using Ramset drive pins will assure you of consistent and optimum quality in every fastener. Ramset drive pins are designed for fastening in concrete and steel. Using Ramset drive pins will assure of consistent can optimum quality in every fastener. The drive pin measures 3'' in length, .300 head diameter and .145 shank diameter. Pin comes with a 16 gauge washer to increase bearing surface against the material to be fastened.