DescriptionSpecificationsDescription#4-40 Knurled Shoulder Grade 2 Steel Thumb Screw 5/8" OAL, 3/8" Head Diam x 3/16" Head Height, Zinc- Plated Finish (MOQ=10, Pkg Qty=1)SpecificationsManufacturer Item No.THS1002M10F21Manufacturer NameElectro Hardware