3/8 inch safety collared, hex head screw eliminates danger of screwdriver slipping and damaging the hose. The combination collared and hex head screw can be used with blade type and nut drivers as well as socket wrenches. 9/16 inch band width offers greater sealing area. 9/16 inch 300 series stainless steel band and housing. 3/8 inch zinc plated carbon steel, collared, hex head screw.