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Standard bolts

Hex bolts, also known as hex cap screws or machine bolts.

Choose your bolt material.
For help determining what grade of bolt you need see Bolt Grade Markings and Strength Chart.

Material	Description
Steel grade 2	Zinc plated low carbon steel. Best for general hardware use where high strength is not required.
Steel grade 5	Made from medium carbon steel, tempered and zinc plated. Best for automotive use and other areas where higher strength is desired.
Steel grade 8	Made from medium carbon alloy steel, tempered, and zinc plated. Best suited for applications where high strength and hardness is required.
Stainless steel 18-8	Stainless steel 18-8 is an alloy of steel with high corrosion resistance. Stainless has become the material of choice for exterior and most marine applications.
Silicon Bronze	Bronze is an alloy of copper with greater strength and corrosion resistance than brass. Most commonly used in wood boat building and restoration.
Hot dipped galvanized	Hot dipped galvanized fasteners are much more corrosion resistant than zinc plated fasteners. Due to the thickness of the galvanized coating, galvanized bolts will only work with galvanized nuts. For exterior and coastal area use. (ASTM A153)
Grade 5 chrome	A grade 5 fastener with a bright mirror-like finish providing sharp looks for a variety of applications.