5/8"-18, Steel Hex Head Cap Screw, Grade 5, 1"L, Zinc Plated Finish, 10 PK

These hex head screws each feature a thick, hexagonal head designed for tightening with a wrench. Use in pretapped holes or with nuts. Grade 5 steel construction offers strength and moderate flexibility. The screws are hardened, yet more malleable than Grade 8, allowing them to withstand shear force.
• ItemHex Head Cap Screw
• System of MeasurementInch
• Cap Screw TypeHex Head Cap Screw
• Basic MaterialSteel
• Material GradeGrade 5
• Fastener FinishZinc Plated
• Dia./Thread Size5/8"-18
• Fastener Length1"
• Fastener Thread DirectionRight Hand
• Fastener Thread TypeUNF (Fine)
• Fastener Thread StyleFully Threaded
• Fastener Industry StandardsASME B18.2.1
• Head TypeHex
• Min. Thread Length1"
• Head Height25/64"
• Head Width15/16"
• Proof Load74,000 to 85,000 psi
• Tensile Strength105,000 to 120,000 psi
• Rockwell HardnessC19 to C30