galvanized steel spiking: 1standard:DIN,GB,ASTM,BS,or by client 2size:5/8"*12" 3grade:4.6,5.6,8.8,10.9 4Certificate:SGS Rail Timber Drive Screw Spike/5/8"*12" galvanized steel spiking >> Specification : DIN,GB ANSI/ASME ASTM, UIC864-1,JIS, AS 1085.18,BS, GOST or according to customers'requirements and drawings. >> thread: 16---36,5/8"--1-3/4" >> length: 60---500 >> Shape of head: Hexagon head >> ...