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1/2"-13 x 4", 18-8

US Fasteners

Hex bolt

Hex bolts

Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Machine screw

Machine screws

Screws with machine threads for use with a nut or in a tapped hole.
Carriage bolt

Carriage bolts & Plow bolts

Bolts with no drive, and machine threads for use with a nut.
Socket product

Socket screws

Screws with an allen wrench drive.
Rod & Stock

Studs, Rod & Stock

Studs, threaded rod, unthreaded rod and keystock for industrial, machining and manufacturing applications.
Hanger bolts & Dowel screws

Hanger bolts & Dowel screws

Hanger bolts and dowel screws are used for adding an external machine or screw thread to wood applications.