Hex Bolt

Hex Bolt Manufacturer

Hex bolts, characterized by their robust six-sided hexagonal heads, are the standard heavy-duty fastening solution engineered to create high-tensile, rigid structural joints when paired with mating nuts or female threaded holes.

As a premium B2B fastener manufacturer with extensive global supply capabilities, we deliver industrial-grade hex bolts engineered to withstand supreme axial and shear forces without failure.

Add to Inquiry

DIN933 Hex Cap Bolt Grade 8.8 | Structural Hex Bolt Manufacturer China

DIN933 hex cap bolt is a fully threaded hexagonal head fastener designed for structural and mechanical assemblies requiring uniform load distribution and metric standard compliance. It is used in

Add to Inquiry

DIN912 Allen Bolt Supplier | High Precision Socket Head Cap Screw

DIN912 Allen bolts, also known as socket head cap screws, are precision fasteners with an internal hex drive. They are engineered for applications requiring high torque, compact installation space,

Add to Inquiry

DIN7991 Hex Socket Screw

DIN 7991 hex socket countersunk head screws are precision fasteners designed for flush mounting, offering secure torque control for industrial and automotive assemblies, robotics, and sheet metal

Add to Inquiry

ASTM A325 Hex Head Screw

ASTM A325 Hex Head Screws are heavy hex structural bolts designed to provide consistent clamping force and high load capacity for steel connections. They are used with matched heavy hex nuts and

Hex Bolt Size Chart

Thread Size	Thread Diameter	Threaded Shank Length (up to 125mm)	Threaded Shank Length (125-200mm)	Threaded Shank Length (200+mm)	Head Width	Thread Width
M4	0.7	14mm	n/a	n/a	2.8	7
M5	0.8	16mm	22mm	n/a	3.5	8
M6	1	18mm	24mm	n/a	4	10
M8	1.25	22mm	28mm	n/a	5.3	13
M10	1.5	26mm	32mm	45mm	6.4	17
M12	1.75	30mm	36mm	49mm	7.5	19
M14	2	34mm	40mm	53mm	8.8	22
M16	2	38mm	44mm	57mm	10	24
M20	2.5	46mm	52mm	65mm	12.5	30

Performance Metrics

Hexagonal head for efficient wrench operation

Excellent torque transmission capability

High tensile and shear strength

Reliable fastening performance

Available in full-thread and partial-thread designs

Wide range of materials and grades

Multiple corrosion-resistant finishes available

Applications

Our high-performance industrial hex bolts provide reliable, unyielding fastening security across multiple high-stakes sectors around the globe:

Automotive & Heavy Transportation

Structural Steel Construction & Civil Infrastructure

Energy, Petrochemical & Fluid Utilities

Heavy Manufacturing Machinery & Material Handling

Railway & Marine Engineering

Custom Manufacturing Services

We offer complete custom solutions for hexagonal bolts to customers all over the world.The workflow is as follows:

Customization options include:

Non-standard lengths and diameters

Special head dimensions

Full-thread or partial-thread designs

Metric and imperial thread standards

Custom strength grades (Grade 2, 5, 8, 8.8, 10.9, 12.9)

Carbon steel, alloy steel, stainless steel, brass, and specialty materials

Zinc plating, HDG, Dacromet, Geomet, Black Oxide, and custom coatings

Head marking and logo stamping

Packaging & Delivery

From packaging to shipment, every product is handled with standardized procedures and protective design — ensuring it arrives in perfect condition after long-distance transit.

Packaging Type	Description
Small Carton + Master Carton	10–20 kg per master carton, labeled with grade, size, lot number.
Steel Pallet / Crate	For large orders (500kg+), stretch-wrapped and banded.
Delivery Lead Time	Stock items: 3–7 days; Custom production: 15–30 days(The time required for different specifications of products varies.).

productcate-745-365

FAQ

Q: What materials are available?

A: Carbon steel, alloy steel, stainless steel, brass, and other engineered materials are available.

Q: Are hex bolts suitable for outdoor use?

A: Yes. Stainless steel, hot-dip galvanized, and specialty-coated bolts provide excellent corrosion resistance.

Q: What standards can be supplied?

A: DIN, ISO, ASTM, SAE, UNC, UNF, and customer-specific standards.

Q: Do you offer free samples?

A: We provide free samples for existing stock items. You only pay the shipping cost. For custom samples, a tooling/sample fee applies, which is refundable upon volume order.

Q: How should I order and make payment?

A: By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.

As one of the most professional hex bolt manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please feel free to wholesale bulk high quality hex bolt in stock here and get pricelist from our factory. Customized orders are welcome.