Product Description

Carbon Steel ASTM A325 HDG Heavy Hex Head Structural Bolt And Nut

A bolt is a form of threaded fastener with an external male thread. Bolts are thus closely related to, and often confusedwith, screws. The Carbon Steel ASTM A325 HDG Heavy Hex Head Structural Bolt and Nut is a specialized type of fastener designed for structural applications that demand high strength and reliability. Compliant with ASTM A325 standards, these bolts feature a heavy hex head design, providing a larger bearing surface and better wrenching for ease of installation. The bolts are made from carbon steel and are treated with a hot-dip galvanized (HDG) finish, enhancing their resistance to corrosion, especially in outdoor and harsh environmental conditions. Paired with accompanying nuts, these structural bolts are specifically engineered for use in critical structural connections, such as in steel-framed buildings, bridges, and other heavy construction projects. They provide high tensile and shear strength, contributing to the overall stability and safety of the structures.

The ASTM A325 HDG Heavy Hex Head Structural Bolt and Nut combination is chosen for its reliability, strength, and corrosion resistance, ensuring secure connections and structural integrity in critical load-bearing applications.

The nature of the tolerance difference allows an ASME B18.2.1 hex cap screw to always fit where a hex bolt is installed but a hex bolt could be slightly too large to be used where a hex cap screw is designed in.

1:Metric Hex BOLT:GB/T 3098.1-2010，ISO898.1-2009
CLASS	4.6;4.8	5.8	6.8	8.8		9.8		10.9	12.9
SIZE	ALL SIZE			≦M12	>M12	≦M8	>M8	ALL SIZE
COMMON MATERIALS	1008 ~ 1015	1012 ~1017	10B21 / 1022	10B21	10B33	10B21	10B33	10B33 / SCM435/ML20MnTiB	SCM435
COMMON MATERIALS	ML08AL SWRCH8A~ SWRCH15A	SWRCH15A~ SWRCH18A	SWRCH22A	35K		35ACR	10B35		AISI 4140
HEAT TREATMENT(YES/NO)	NO			YES

2:ASME Hex BOLT:SAE J429
CLASS	G1	G2	G5		G5.2	G8	SK
SIZE	ALL SIZE		≦3/8	>3/8	ALL SIZE
COMMON MATERIALS	1008 ~ 1015 ML08AL SWRCH8A~ SWRCH15A	1017	C(0.28~0.55) 10B33 or MEDIUM CARBON STEEL		C(0.15~0.25) or 10B21	10B33 or SCM435	SCM435
COMMON MATERIALS	1008 ~ 1015 ML08AL SWRCH8A~ SWRCH15A
HEAT TREATMENT(YES/NO)	NO		YES

Product Name	Carbon Steel ASTM A325 HDG Heavy Hex Head Structural Bolt And Nut
Standard:	DIN,ASTM/ANSI JIS EN ISO,AS,GB
Material	Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L
	Stainless Steel 304 316 316L GrB8 B8M. Carbon Steel
Finishing	Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG) phosphorization, Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
Customized Products Lead time	Busy season:15-25days,Slack seaon:10-15days
Stock Products	Stainless steel: All DIN ,GB Standard and part ASNI standard stainless steel screws, Example: ISO7380,DIN7981,DIN7982,DIN916,DIN913,DIN7985,DIN912
Get Free Samples for standard fastener from Gangtong Zheli Fastener
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Application:

Environmental protection equipment, medical equipment, communications equipment, electric power facilities, electronic products, food machinery, petrochemical industry, ship assembly, pump valve, pipe, building curtain wall, Buildings, machanical equipments, bridges, tunnels, high speed railways etc

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