square u bolts 1.material: carbon steel 2.size: 1/4"~ ... ~M24 3.surface: DAC,,plain. zinc HDG 4.certificate: ISO9001 square u bolts Feature: 1) Standards: DIN & ANSI & JIS & IFI2) Material ... "4)SURFACE:ZINC ,HDG, PLAIN,DAC5)Thread:unc unf metric6) Quality control :ISO 90017)Package :Small box ,POLY BAG,Carton+Pallet8 ... Union 9)Delivery: 30 days or depend on the qty galvanized square u bolts class 6.8