Simpson HUC5.125/12 Concealed-Flange Heavy Face-Mount Joist Hanger for 5-1/8 in. Glulam 14-Ga G90 Adapters & Bushings Does this hanger require predrilling

Does this hanger require predrilling before installing the SDS screws

What is the difference between the overall length and the working length on this bit

such as the HSS2-SDS1

Concrete slab and foundation pours requiring pre-set anchor bolt positioning

Simpson HUC5.125/12 Concealed-Flange Heavy Face-Mount Joist Hanger for 5-1/8 in. Glulam 14-Ga G90 Adapters & Bushings Does this hanger require predrillingThe Simpson Strong Tie HUC5. 125 12 HUC Galvanized Face Mount Concealed Flange Joist Hanger by Simpson Strong Tie is engineered for structures requiring additional strength and safety factors. Designed to accommodate a 5 1 8 in. glulam member, this heavy duty face mount hanger features concealed header flanges that provide cleaner visible lines in exposed conditions making it an ideal choice where both structural performance and finished appearance