Simpson #8 x 2-1/4" Fiber-Cement Screw, 316 Stainless Steel PACK:1000 Pk What does the "Double" designation

What does the "Double" designation mean for the HUC312-2

Bending Stroke Control: 2-button or foot pedal

while HSUL is skewed to the left

Choose Type 316 stainless steel for seaside applications

Simpson #8 x 2-1/4" Fiber-Cement Screw, 316 Stainless Steel PACK:1000 Pk What does the "Double" designationCoating Material. Type 316 Stainless Steel Screw Size. #8 Length (in.) 2 1 4 Head Diameter (in.) 0. 395 Drive Type. #2 Square Head Type. Ribbed Wafer Head Thread Type. Coarse Threads Point Type. Type 17 Point The fiber cement screw is ideal for binding fiber cement siding to stressed skin panels or lap siding to wood. It features a wafer head with self countersinking nibs, a type 17 point for fast starts and full length coarse threading. Key Features