304 and 305 series stainless steels so 18-8 is used at times to designate any and all of those alloy groups

00 x 60 Socket Set Screw Cup Point DIN 916 Black Oxide Alloy

Threaded approximately 2

5/8-18 x 6 1/2 Socket Cap Screw Alloy

50 x 120 Hex Cap Screw DIN 931 A2 (18-8) Stainless Steel - DIN 931 A2 Hex Cap Screws are manufactured from A2-70 stainless steel per ISO 3506 part 1

M10.00 Hex Keys Alloy 8650 Long Arm - Metric Reduced Shank Drill Bits - 3/8 Shank 304 and 305 series stainlessM10. 00 Hex Keys Alloy 8650 Long Arm Metric . Quality L shaped Long Arm Hex Keys or Hex Wrenches from Brighton Best. Hardness of RC 48 45.