016.01.4402 or 016014402 Dana Spicer Screw Hex Head is a genuine Dana Spicer fastener for off highway axle applications, sold by Pro Gear and Transmission. The hex head takes a socket or wrench, so the screw can be tightened with real torque. Tightening draws the mating parts together and builds the clamping force that holds the joint. Call us to confirm proper fit for your axle.FeaturesGenuine Dana Spicer hex head screwPart number 016.01.4402For off highway axle applicationsHex head drives with a socket or wrenchTightening builds the clamping force that holds the joint