China STANDARD FASTENER Suppliers, Manufacturers, Factory - Customized STANDARD FASTENER Wholesale

STANDARD FASTENER

Hex nut

Petrochemical hex nuts are core fasteners used in flange joints of petroleum refining and chemical processing units. Manufactured to SH/T 3404, HG/T 20634 (American system) and HG/T 20613 (European system) standards, these heavy hex nuts are designed to pair with corresponding studs and bolts under high-pressure, high-temperature operating conditions.

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Copper Nut

Brass fasteners are widely preferred for their excellent corrosion resistance, natural antimicrobial properties, and attractive golden finish. As a trusted brass fastener supplier in China, we supply a full range of copper alloy hardware including brass bolts, nuts, screws, washers, threaded rods and custom-made fasteners to clients in electrical, marine, plumbing and construction industries worldwide.Our brass fasteners are manufactured from standard grades such as C36000 (Free Cutting Brass), C26000 (Cartridge Brass) and CuZn39Pb3, ensuring consistent thread accuracy, good machinability and long service life even in humid or corrosive environments. Available in both metric and imperial sizes, these non-magnetic fasteners are ideal for electrical fittings, marine hardware, water treatment equipment, decorative applications and outdoor installations where steel fasteners would rust.Whether you need standard brass hex bolts, pan head machine screws, wing nuts or special-shaped custom parts, we can match your drawings, samples or international standards including DIN, ISO, ASTM and BS. Contact us for your brass fastener requirements and get factory-direct pricing with reliable lead time.

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Hex Head Extra Long Bolt

Class 8.8 high strength long hex bolt with black oxide treatment.Size: , 1 5/8INCH, LENGTH:380MM, thread protected by blue plastic net to avoid damage. Ideal for flange, pressure vessel, steel structure and heavy equipment fastening, customizable in size and length, act as heavy-duty fastening parts to lock and connect multiple thick components tightly, preventing loosening under vibration and pressure working conditions

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ASTM A194 4 Teflon Coated Nut with Fully Thread Bolts

ASTM A194 4 TEFLON Coated Nuts,Size 7/8Inch, Material ASTM A194 Grade 4 Hex Nuts.

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Half Thread Stud with Teflon Coated ASTM A320 L7

Half Thread Stud with Teflon Coated,Material of Bolt is ASTM A320 L7, Size 5/8in, UNC 105mm Long, ASTM A320 L7, 2 Grade 4 Hex

Nuts. Fluoropolymer

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DIN933 Full Stud with Nut and Gasket, SS304 Bolt, Stainless Steel Fully Stud

DIN933 Fully Stud with Nuts and Gasket, Stud material is Stainless steel SS304,Stud Size 1 1/2Inch and Length 180mm

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Fasteners are a very wide range of mechanical parts used to connect parts. Fasteners include Bolts, Screws, Nuts. If Screws, Nuts, Bolts and Screws have Threads, they are called Threaded Fasteners. The thread is divided into Full Thread and Half Thread. The Standard of Bolts are: British, German and American. National Standard Fasteners are Identified as Standard Fasteners or Referred to as Standard Parts. (1) Bolt: A type of Fastener Composed of Two Parts, Head and Screw (Cylinder with External Thread), Bolt and Nut are used to Fix parts with through Holes

Peculiarity：

Many Specifications
Different Performance Uses
High Standardization, Serialization and Generalization

Material:

4.8 Grade、8.8 Grade、10.9 Grade、12.9 Grade、35#、35CrMo、B16、A193 Gr.B7、A193 Gr.B7M、A193 Gr.B8、A193 Gr.B8M、A320 Gr.L7、A320 Gr.L7M、A2(304)、A4（316）、660 F51、F53、F55 Nickel-based alloy materials

Product Surface Treatment:

Black Paint, PTFE(Teflon), Nickel Plating (Ni), Galvanized Passivation, Galvanized Nickel, Dacromet, Cadmium Plating... Different materials are suitable for Different Corrosive Environments.

Standard:

Bolt:GB799 GB897-901 GB15389 GB4707
SH3404 HG20613 HG20634 ANSI/ASME B18.2.1 B18.2.3.5M B18.2.6M
Nuts: GB6170、GB6175、HG20613、HG20634、SH3404、ASME B18.2.2、ASME B18.2.4.1M、ASME B18.2.4.2M、ASME B18.2.4.6M

Application:

Energy (Electronics, Electrical appliances, Machinery, Chemical, Metallurgy, Mold, Hydraulic) Machinery, Equipment, Vehicles, Ships, Railways, Bridges, Buildings, Structures, Tools, Instruments.