Type 1 -1/4-20 X 2-1/4 Thru Bolt & Finish Washer (1-3/4" door)
Mounting Options
Type 5 Back to Back Mtg on 1-3/4" Door, Type 6 Concealed Mtg on Metal Door, Type 7 Concealed Mtg on Wood Door, Type 9 Decorative Blind Head, Type 10 Back to Back Mtg on Glass Door