Simpson #12 x 2-1/2" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel PACK:1000 Pk 37/9 feature obround nail holes

37/9 feature obround nail holes on the acute side

Use with 10 gauge - 33 ksi connection plates in mass timber assemblies

Type 316 stainless-steel SDS screws in the joist

The HDIASTH62 setting tool is sized at 5/8 inch

one-piece steel construction that has been induction hardened and chromed for increased strength

Simpson #12 x 2-1/2" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel PACK:1000 Pk 37/9 feature obround nail holesModel No. T12250HDU Coating Material. Type 316 Stainless Steel Screw size. #12 Drive Type. 5 16 in. Hex Length (in.) 2 1 2 Thread Type. Tapping Threads Head Type. Hex Washer Head TPI. 14 Point Type. Drill Point Use this Stainless Steel Self Drilling Hex Washer Head Screw for fastening aluminum and fiberglass (but not for steel). Applications Aluminum and fiberglass fastening (not steel) Key Features Indented hex washer head Tapping screw thread #3