Size608PCS 1/4-20,5/16-18,3/8-16,1/2-13MaterialGrade 8 Alloy SteelBrandFolivFastener TypeHexHead StyleHexAbout this itemGRADE 8 BOLTS ASSORTMENT KIT: Made of heavy duty Grade 8 Alloy Steel, corrosion resistance, good wear resistance, high hardness.MORE SAE SIZES: 1/4-20 x 1/2 to 1-1/2, 5/16-18 x 3/4 to 2, 3/8-16 x 3/4 to 2 and 1/2-13 x 2-1/2”. Package includes 142pcs SAE hex bolts, 155PCS hex nut and 155PCS spring washers, you don’t need to buy extra nuts and washers.UPGRADED PACKAGE PROTECTION: This is a heavy sae bolts kit, we have adde