1/4 x 3 3/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

(AF8™) 5/16 ALLIGATOR® Anchor w/ Flange Nylon (100)

They are actually stronger than most metal and chemical anchors

7/16-14 x 6 Hex Cap Screw SS 316 (A4)

3/4-10 x 11 Socket Cap Screw Alloy

M24-3.00 x 120 Hex Cap Screw DIN 931 A2 (18-8) Stainless Steel LedgerLOK Ledger Board Fasteners 1/4 x 3 3/4 PhillipsM24 3. 00 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. 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.