On diameters over 1 inch to 1 1/2 hardness will range from HRC 19-30

8 x 1 Simpson Flat-Head Marine Screw - Phillips Drive 316 SS - Box (100)

5/8 x 18 Ship Auger Wood Bit

Designed for use in machines and portable drilling in hard sheet metal alloys such as stainless steel and titanium

10 x 1 screw

M20-2.50 x 200 Hex Cap Screw DIN 931 A2 (18-8) Stainless Steel Phillips Flat Concrete Screws On diameters over 1 inchM20 2. 50 x 200 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. These are partially threaded hex cap screws with all dimensions conforming to DIN 931. Designed for use in standard bolting applications where corrosion is of concern.