Hakea clavata is a lignotuberous spreading or sprawling shrub up to wide and high. Mid-green leaves are thick, flattened, long and narrow long and wide, ending in a hard sharp point. Sometimes club-shaped widening at the apex. The inflorescence has 60-80 white and pink flowers appearing in short racemes in leaf axils and tips of branches. The perianth has a pink claw, grey limbs and white interior. Woody fruit are egg-shaped with the widest part nearer the stem long and wide. Alternatively egg-shaped with the wider section toward the apex, both shapes having two small horns at the back of the fruit. The black-brown seeds have an obliquely obovate shape and a length of . Each seed has a broad wing along one side of seed body.
