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ASME ANSI standard carriage bolt covers the complete general and dimensionam data for the various tyoes of inch series bolts generally classified as carriage bolt and recognized as American National Standard.  

ASME ANSIB 18.5 carriage bolt have a circuar head with a low rounded top surface and flat bearing surface,and an integrally formed square neck under the head.The inclusion of dimensional data inthis standard is not inteded to imply that all of the products described are stock production sizes.So please consult with us concerning availability of the products needed.

Standard	Grade	Finish	Thread
ASME B18.5	2	Plain	UNC
		Zinc plated
	5	Yellow zinc plated
		PTFE
	8	Black	UNF
		Dacromet
	Other	HDG
		Other