Carbon Steel Gr 5.6 Hot Dip Galvanized Square Neck Round Head Bolt Carriage Bolt

At the Goshen hardware , we provide you with several high quality Carriage Bolts that are made from premium quality materials and different grades of stainless steel to ensure that these will last for long time.

Typically, carriage bolt sizes range from #10 to 3/4" or M5 to M20 in diameter while lengths span from about 1/2" to 20"—only larger sizes are available in long lengths. Measure length from under the head to the threaded end of the bolt. And it’s often using standard as beloW: DIN607， DIN603 ，ISO 8677，JIS B 1171，ASME/ANSI B 18.5.2.3M，ASME/ANSI B 18.5 ect.If u have drawing of carriage bolt, pls send it to us , we can according your requirement to production. Welcome your inquiry.

Gr5.6 Chemical Composition(%)
Grade	C	Mn	Si	S	P
	0.045	0.27	0.06	0.027	0.02

DIN603
Screw Thread d	Pitch P	k		s
Screw Thread d	Pitch P	min	max	min	max
M5	0.8	2.7	3.3	4.52	5.48
M6	1	3.12	3.88	5.52	6.48
M8	1.25	4.12	4.88	7.42	8.58
M10	1.5	4.62	5.38	9.42	10.58
M12	1.75	6.05	6.95	11.3	12.7
M16	2	8.05	8.95	15.3	16.7
M20	2.5	9.95	11.05	19.16	20.84

Material: Made from robust carbon steel for high tensile strength and durability, suitable for demanding applications.
Coating: Features a hot-dip galvanized (HDG) finish, providing excellent corrosion resistance. The zinc coating protects the bolt from rust, making it ideal for outdoor and harsh environmental conditions.
Head Design: Round head with a smooth finish, offering a low-profile appearance. The round head distributes pressure evenly, reducing the risk of damage to the mounting surface.
Square Neck: Equipped with a square neck directly beneath the head. This unique design prevents the bolt from turning when the nut is tightened, ensuring a secure and stable connection without the need for a washer.
Thread: Partially threaded shank. The threading is precision-formed for a tight fit, ensuring reliable fastening and easy installation.
Drive Type: Hexagonal socket drive allows for efficient tightening and loosening with standard hex keys or sockets.
Standards Compliance: Manufactured in accordance with DIN 603 standards, ensuring consistent quality and performance.

- Head Diameter: Varies with bolt size (e.g., for an M8 bolt, the head diameter is approximately 17 mm).
- Head Thickness: Corresponds to bolt size for proportional strength.
- Neck Dimensions: The square neck is sized to match the bolt diameter for optimal performance.

Construction: Perfect for structural connections in buildings, bridges, and other heavy-duty construction projects.
Manufacturing: Widely used in machinery and equipment assembly for secure and vibration-resistant fastening.
Outdoor Projects: Ideal for decks, fences, wooden structures, and other outdoor applications where corrosion resistance is crucial.

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Jiaxing Goshen Hardware CO., LTD is Located at Economic Development Area, Jiaxing City, Zhejiang Province, China. We specialise in suppling kinds of stainless steel, high strength and low carbon steel fasteners with excellent quality and reliable price. Our fasteners according to a number of internationally recognised standards including DIN, ANSI/ASTM, BS, JIS, GB etc.