5/16"-18 x 4 Hot Dipped Galvanized Hex Bolt Kit (25 Sets) w/50 Flat washers, 25 Nuts, 25 Split Lock washers. Grade A307, Partial Thread - by Fastener

5/16"-18 x 4 Hot Dipped Galvanized Hex Bolt Kit (25 Sets) w/50 Flat washers, 25 Nuts, 25 Split Lock washers. Grade A307, Partial Thread - by Fastener

Coarse Thread Superior Corrosion Resistance Hot Dipped Galvanized Finish Grade A 307 7/8" of Thread 50 USS Flat Washers, 25 Hex Nuts and 25 Split Lock Washers Included in kit Minimum Tensile Strength: 60,000 Psi RoHS Compliant Specifications Met: ASTM F2329/F2329M or ASTM A153/A153M Minimum Coating Thickness: Coating thickness for sizes 3/8 “ & under : 0.0017” (43 microns) Coating thickness for sizes over 3/8“ : 0.0020” (50 microns) Hex Bolts are made of low carbon steel, these fasteners are applicable for most low strength commercial and industrial uses. Galvanized plating protects the bolt from corrosion; typically used in outdoor applications.