5/16-18 x 3/4 Thumb Screw Type P Plated 5/16-18 x 3/4 thumb screw type b (no shoulder) plated TSP5161834 $0.525/ea
5/16-18 x 1 Thumb Screw Type P Plated 5/16-18 x 1 thumb screw type b (no shoulder) plated TSP516181 $0.582/ea
5/16-18 x 1-1/2 Thumb Screw Type P Plated 5/16-18 x 1-1/2 thumb screw type b (no shoulder) plated TSP51618112 $0.714/ea