JM Hardware® Highway Guardrail Fastener are commonly used for safety fence and highway barriers. We specially make all this types of crash barrier fasteners. 
They are mostly required to make hot dip galvanized ,powder finish, dacromet ,electro galvanized and paint coating,etc.
Specification
Name: Highway Guardrail Fastener
Standard: DIN931/933/912/DIN603, ASTM, JIS, BSW, Nonstandard bolt (according to your order) and etc.
Material and Grade:
  1)Material: High quality carbon steel.
      Grade: 4.8, 5.8, 6.8, GR.2, A307.
  2)Material: Alloy steel :20MnTiB ,40Cr ,42CrMo.
      Grade: 8.8, 10.9,12.9 ,GR.2,GR.5,GR.8,A325-1,A490-1 ,GR.B7,GR.B7M.
Surface Treatment: Part galvanization, Colorful galvanization, Army green galvanization, Black galvanization, Steam Black, Ash phosphorus, Brass, Nickel plate, Chrome plate, hot dipped galvanized, Zinc plated(yellow, black, green) or according to customers requirements.
Size: M6-M64.
Supply ability: 600 tons per month.
Packing: 25kgs per carton, 40 cartons per pallet; or 50kgs per gunny bag, 20bags per pallet; or as to customers’ requirement.
Our factory also can produce else of bolt: Hex bolt, hex cap screw, square bolt, carriage bolt, socket cap screw and L bolt and U bolt, threaded rod etc.
JM Hardware® can also can produce according to the drawing from clients.