The 300 Series: 302/303/304/A2 Stainless Steel Hex Bolts

stainless steel hex bolts300 series stainless is also known as 18-8 stainless steel because it typically consists of 18% chromium and 8% nickel. 300 series stainless steel has excellent corrosion resistance and is generally non-magnetic. It is an excellent material to use for general outdoor purposes. It can withstand standard environmental conditions without corroding. It is a far superior material to use compared to steel products when it is exposed to the elements. The 300 series stainless properties are below.

300 Series Stainless Steel Properties

Stainless Steel
CrNiMax C MaxMn Max PMax S  Mo Max SiQuote
302 17-19% 8-10% 0.15% 2% 0.045% 0.03%   1% RFQ
303 17-19% 8-10% 0.15% 2% 0.02% 0.15% min 0.6% max 1% RFQ
304 18-20% 8-10.5% 0.08% 2% 0.45% 0.03%   1% RFQ

We carry 300 series hex bolts in both a hex cap screw and a hex tap bolt (full thread). We start at ¼-20 thread and can do special large diameters up to 3”. We carry both fine and course thread hex bolts. We also carry A2 stainless steel which is the equivalent of 18-8 stainless steel in metric hex bolts. We offer 18-8 bolts in both import and domestic sizes. KD Fasteners, Inc.® also has the capabilities to make 18-8 bolts special per print or custom.