Carriage Bolt

Carrige Bolt(Coach Bolt/Mushroom head square neck bolts) Has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. A rib neck carriage bolt has several longitudinal ribs instead of the square section, to grip into a metal part being fixed. A bolt mostly used in wood with a domed top and a square under the head. This pulls into the wood as the nut is tightened. 1.Material:Carbon steel 2.Head mark:OEM 3.Dia:1/4-1" (ANSI),M5-M24(DIN) 4.Length:5/8-14"(ANSI),16-400MM(DIN) 5.Standard:ANSI,DIN,AS,BS and etc 6.Production Processing:Cold forged or Hot forged 7.Surface:Plain,Zp,Hdg and Black zp 8.Quality: Approved and assured and can provide English test report 9.Machine:Forged machine, Heat treatment Equipment, Drawing machine, etc 10.Mould: We open by ourself 11.Usage Scope:Guardrail and railway etc 12.Packing:General carton then pallet packingor small box then into carton then in pallet packed 13.Delivery time:20-30days after confirmation of order or receipt of depoist 14.Payment term:T/T or L/C MaterialDescriptionZinc plated steelSteel is zinc plated for moderate protection against rust.Steel grade 5Made from medium carbon steel. Used in automotive applications and where higher strength is desired.Stainless steel 18-8Stainless steel 18-8 is an alloy of steel with high corrosion resistance. Stainless has become the material of choice for exterior and most marine applications.Silicon BronzeBronze is an alloy of copper with greater strength and corrosion resistance than brass. Most commonly used in wood boat building and restoration.Hot dipped galvanizedHot dipped galvanized fasteners are much more corrosion resistant than zinc plated fasteners. Due to the thickness of the galvanized coating, galvanized bolts will only work with galvanized nuts. For exterior and coastal area use. (ASTM A153)Grade 5 chromeA grade 5 fastener with a bright mirror-like finish providing sharp looks for a variety of applications.