Specialty Bolts

Specialty Bolts Manufacturer

Specialty bolts are engineered fastening solutions designed for applications where standard bolts cannot meet specific performance, dimensional, structural, or environmental requirements.

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High Strength TC Bolts

High strength TC bolts are engineered fasteners designed to deliver reliable mechanical performance under demanding structural, mechanical, and industrial load conditions.

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Zinc Plated Stud Bolt

Zinc Plated Stud Bolts are double-ended threaded fasteners designed for structural and industrial applications requiring stable clamping force and moderate corrosion resistance.

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Carbon Steel U Bolt Clamp

Carbon steel U-bolt clamps are precision fasteners designed to secure pipes, rods, or structural components while resisting vibration and allowing adjustable positioning. They are commonly used in

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Carriage Bolt Yellow Zinc Plated Grade 4.8 8.8 Manufacturer

Yellow zinc plated carriage bolts (also known as round head square neck bolts or DIN 603 coach bolts) are structural fastening components designed for secure wood-to-wood, wood-to-metal, and selected

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DIN188 T Bolt HDG Grade 8.8 Channel Bolt Manufacturer

DIN188 T Bolts are T-head fasteners designed for installation in compatible channel profiles, T-slots, and mounting systems.

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DIN 6921 Flange-Type Structural Fastener

DIN 6921 Flange-Type Structural Fasteners are manufactured with an integrated flange under the hexagonal head, providing a larger bearing surface and improved load distribution without the need for

Size Chart

Thread Size (D)	Thread Pitch (Mm)	Head Width (B)	Head Height (K)	Length (L)	Metric Range	Approx.Inch Equivalent
M6	1	10	6	20–60 mm	M2.5	#2-#3
M8	1.25	13	8	25–80 mm	M3	#4
M10	1.5	16	9	30–100 mm	M3.5	#5-#6
M12	1.75	18	11	35–120 mm	M4	#7-#8
M16	2	24	14	40–150 mm	M4.5	#8-#9
M20	2.5	30	17	50–200 mm	M5	#10
6.0mm	30-100	PZ3	12	3.35	M6	#12

Features

Available in metric and imperial standards

High tensile strength and load capacity

Excellent corrosion resistance options

Precision-machined threads

Wide material selection

Suitable for harsh operating environments

Application Scenarios

Our highly specialized bolts are designed for deployment in high-liability, high-performance engineering segments:

Heavy Duty Automotive & Powertrain:

Engine cylinder heads, connecting rods, flywheels, and heavy suspension setups requiring consistent clamping force under continuous vibration.

Wind Energy & Power Generation:

High-strength foundation bolts, rotor blade connections, and turbine housing fasteners engineered to endure cyclic wind loading and atmospheric weathering.

Petrochemical & Oil Gas Platforms:

Subsea valve bodies, high-pressure pipeline flanges, and refinery structures operating under highly corrosive and high-temperature conditions.

Heavy Infrastructure & Bridge Building:

Custom anchor bolts, massive tie-rod connections, and structural joints supporting large span bridges, tunnels, and railway grids.

Manufacturing Process

Material Spheroidizing Annealing & Wire Drawing

Multi-Station Progressive Cold Heading / Hot Forging

CNC Machining & Precision Grinding

Atmosphere-Controlled Heat Treatment

Thread Rolling & Surface Finishing

Quality Control

Before each product leaves the factory, it undergoes standardized testing procedures. This ensures that the products you receive are reliable, stable and durable.

Raw material verification

Dimensional inspection

Thread gauge inspection

Tensile strength testing

Hardness testing

Coating thickness inspection

Salt spray corrosion testing

Batch traceability management

Final product verification

Packaging & Delivery

Packaging Options

Bulk cartons
Small box packaging
Pallet packaging
Wooden crate packaging

Shipping Methods

Sea freight
Air freight
Railway transportation

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Lead Time

Quantity (pieces)	1 - 1000	1001 - 3000	3001 - 5000	> 5000
Lead time (days)	7	16	20	To be negotiated

FAQ

Q: What materials are available?

A: Specialty bolts are usually made of alloy steel or titanium alloy with a strength higher than 1000 MPa. We can also provide carbon steel, stainless steel, brass, aluminum alloy and other special materials.

Q: What surface finishes are available?

A: Zinc plating, hot-dip galvanizing, black oxide, Dacromet, Geomet, nickel plating, and customized coatings.

Q: Can you provide material certificates and inspection reports?

A: Yes, MTC, inspection reports, and third-party testing documents can be supplied upon request.

Q: Can you provide a sample?

A: Sure, Our sample is provided free of charge, but not including courier fees.

Q: What is your payment terms?

A: We can accept T/T, LC for general orders, Paypal and Western Union for small orders or sample orders.

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