Stainless steel fasteners supplied by Grove Components is either A2 or A4 (unless otherwise described) and are fabricated from high quality components.
Most of the bolts are A2-70, having an average strength of 700 MPa (Mega Pascals)
A2 Austenitic Stainless Steel having an 18% Chromium content and an 8% Nickel content (termed as 18/8).
A4 stainless steel fasteners (which have a 3% Molybdenum content for increased corrosion resistance in marine applications) - termed 18/8/3.
It is always advisable to use a lubricant when fitting stainless steel threads to minimise GALLING sometimes called COLD WELDING, when the threads lock together as if welded.