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HomeNewsASTM Hex Bolt Bolts

ASTM Hex Bolt Bolts

2022-01-14
ASTM Hex Bolt
ASTM Head Identification

ASTM refers to the grade standards set by American Society for Testing and Materials. Typically, the strength of the fastener is notated by the letter "A" plus three digits.

20220114160637

A2/Type 304 (18-8) Stainless Hex Bolt
Type A304 fasteners are the most commonly used stainless steel fasteners on the market. Consisting of a standard of 18% chromium and 8% nickel, it's perfect for high temperature applications and is resistant to corrosive acids. They can be used in freshwater marine environments, but are not well suited for saltwater environments.
A4/Type 316 Stainless Hex Bolt
A4/316 stainless fasteners are also known as marine grade fasteners due to their ability to withstand the corrosive nature of salt water. These cap Screws are good for applications such as docks, piers, boats and boat houses.
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