Constructed of corrosion resistant stamped 304 stainless steel. Designed with a locking mechanism which requires the key to actuate preventing lock out. Functions as a conventional hasp when key is not in use. Installs with seven #8 FH fasteners (not included). Includes two matching keys. A 3-1/8" B 2-1/8" C 1-1/4" D 3/4" Fastener #8 FH