Hi, no they are not stainless steel, they are WIROX coated a high anti-corrosion finish.
Please see part number 8893F for s imliar fixing in stainlee steel
http://www.screwfix.com/p/spax-double-thread-facade-screws-4-5-x-60mm-100-pack/8893f
Answered by: Spax Product Expert
Date published: 2016-12-04