1/4-20 x 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

which makes them particularly well-suited for outdoor usage

3/4-10 x 3 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (75)

1-8 x 4 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (30)

5/8-18 x 2 Grade 8 Hex Cap Screw Plain Domestic USA (175)

8-18 x 3/4 Hex Washer Head Self Drilling Screw Zinc Plated Tek #2 (10000) Square Bugle Coarse Drywall Screws Black Phosphate 1/4-20 x 4 Grade 58 18 x 3 4 Hex Washer Head Self Drilling Screw Zinc Plated Tek #2 (10000). A tapping screw with an integrally formed hex washer head , spaced or unified threads, and a #2 or #3 drill point. Designed to drill through steel. AISI 1022 or equivalent steel. Rockwell C50 56. Meets F. I. P. 1000. 7 for torsional strength & drill speed. Meets ASTM A 510 for carbon steel manufacturing. Zinc plating meets ASTM B 117 for salt spray corrosion. Manufactured to