These #10 x 1" screws are the standard for stainless steel applications. They are resistant to rust and corrosion in most environments. For coastal or marine applications please use the Marine Bolt Supply type 316 stainless option. These screws are fully threaded and have a #2 phillips drive head. They are 1" long (length does not include the head) Refer to pictures for all measurements. Use #10 flat washers if needed.