5/16"-18 x 3 1/4" Partial Thread Grade 2 Hex Cap Screw – Plain Finish

Manufactured from Grade 2 carbon steel, this 5/16"-18 x 3 1/4" partial thread hex cap screw features an unthreaded shank to improve alignment and increase shear strength. Designed with a UNC coarse thread and plain finish, it is ideal for light‑duty construction, maintenance, and general industrial fastening applications where controlled clamping and reliable performance are required.