SLOTTED HEAD Mortise Cylinder Retaining Screws Bag of 10 includes 5 standard and 5 long mortise cylinder locking screw for commercial storefront lock bodies like Adams-Rite and others. These locks are found on most aluminum storefront doors. The 3/8" long screw is used with 31/32" backset locks and the 1/2" long screw is used with 1-1/8" backset locks. Slotted Head.
