Material: Aluminum, brass, bronze, stainless steel
Mounting:
Metal and wood door: type 1, 1/4 - 20 x 2 1/4" thru bolt and finish washer (standard 1 3/4" door)
Metal door: type 2, surface, #8 - 32 x 3/4" OH MS
Wood door: type 2, surface, #8 x 3/4" OH SMS
Metal door: type 6, concealed, 1/4 - 20 CH MS x 1/2" thread
Material Size: 1" dia.
Base: 2" x 6"
Projection: 2 7/8"
Clearance: 1 7/8"