Adams Rite - Deadbolt - MS1850S-250-628
Stainless steel bolt nearly 3" long, activated by an uncomplicated pivot mechanism. Provides maximum security for a single leaf door.
Case, 1x6", is steel with corrosion resistant plating; 31/32" backset, 628 clear anodized finish.
360 degree turn of key or thumbturn retracts the bolt.