Wood structural panels, combination subfloor underlayment to framing. 3/4 and less 6d deformed nail or 8d common nail 6 12. 7/8 -1 8d common nail or 8d deformed nail 6 12. 11/8 -11/4 10d common nail or 8d deformed nail 6 12. For SI: 1inch=25.4mm,1foot=304.8mm,1mileperhour=1.609km/h.