Shanghai kinsom precision hardware co.,ltd provide kinds of bolts as 5/16"-18 x 3-12 Zinc Finish ASTM A307 Grade A Round Head Carriage bolt
Following is the Essential Information for your reference.
1.Material: Stainless steel ,carbon steel, brass,alloy /aluminum steel,high strength steel
2.Standard: JIS,DIN,ANSI,ISO,BS,GB,Non standard is availabe and depends on customer's requirements
3.Type: All kinds of flat,pan,button,truss and fillister etc
4Drivers: All kinds of hexagon,phillips,slotted,six-lobe and s type etc
5.Class: 4.8-12.9
6.Surface treatment: Zinc,Nickel,Chrome,Titanium,Black oxide etc
7.Specification: M1.2-M30
8.Process : Cold forging,die casting,metal injection molding
9.Applicaion: Machine,electronics,tools,autos,fitness equipment and other industrial request