Hex Bolt, Full Thread / Carriage Bolt / Roofing Bolt with Square Nut / Hex Socket Head Bolt / Hex Bolt, Partial Thread / Hex Cap Screw / Hex Bolt / Hex Tap Bolt / Hex Machine Bol / Hex Flange Head Bolt / Flat Countersunk Head Square Neck Bolt / Guardrail Bolt / T-Bolt