Allstar Flush Head Self-Ejecting Allen Fasteners Fasteners 5/16 .550in 50pk Steel ALL19133 Flush Flush Head Self-Ejecting Allen Fasteners Fasteners 5/16″ x .550″ Long, Steel Alternate Description Flush Head Self-Ejecting Allen Fasteners FASTENERS 5/16 .550IN 50PK STEEL Part Number ALL19133 Vendor Part Number ALL19133 UPC Code 848238060362 Package Weight 1.15 lbs 0.52 kg Package Length 4.7 in 11.94 cm Package Width 4.4 in 11.18 cm Package Height 2.3 in 5.84 cm Head Style Flush Turn Method Hex Drive Self Ejecting Yes Flange Yes Body Diameter 5/16 in Body Length 0.55 in Material Steel Color Zinc Finish Oxide Quantity Set of 50 Spec Sheet Allstar Spec Sheet Instruction Sheet Allstar Instruction Sheet