Items list including  Hex bolt, Hex socket bolt, Timber bolt, Carriage bolt, T head bolt, U bolt, Hex bolt, Hex flange bolt, Hex socket bolt, Roofing bolt, Square bolt, Track bolt, Eye bolt, Hanger bolt, Shoulder bolt, Silo bolt, Foundation bolt, Wing bolt, Thumb bolt, Knurled bolt etc

Material including: Steel, Stainless steel, Brass, Alu

Grade including 4.6, 4.8, 5.8, 6.8, 8.8, 10.9, 12.9. A307, A194, grade2, grade 5, grade 8, grade 10

Size including: M3-M72, 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 5/8", 7/8", 1", 1-1/4", 1-1/2", 1/3/4", 2"

Surface finish: Plain, zinc plated white and yellow, HDG, galvanize, black oixde, nickel, nylok, dacromet, phosphatizing, polish, passivate.

Bolts are widely used in various fields for the following main purposes:

Mechanical Engineering: In machinery manufacturing, bolts are crucial for assembling different components of machines. They hold together engine parts, gearboxes, and frames, ensuring the stability and proper functioning of the machinery. For example, in an automobile engine, bolts are used to fasten the cylinder head to the engine block, maintaining a tight seal and enabling the engine to operate smoothly.

Construction Industry: In building construction, bolts are used to connect steel beams and columns, forming the framework of structures. They are also used to attach wooden components in residential construction. For instance, when constructing a steel - framed building, high - strength bolts are used to join the beams and columns, providing the necessary strength and stability to withstand various loads.

Electrical and Electronics: In the electrical and electronics industry, bolts are used to secure electrical components such as transformers, circuit breakers, and switchgear. They ensure good electrical contact and mechanical stability. For example, in a power distribution substation, bolts are used to connect the busbars and electrical equipment, allowing for the efficient transmission and distribution of electricity.

Household and Furniture: Bolts are commonly used in household items and furniture. They are used to assemble furniture such as tables, chairs, and cabinets, providing a firm and stable connection between the different parts. In addition, bolts are used in household appliances to secure internal components. For example, the cover of a washing machine is often held in place by bolts.

In summary, bolts play a vital role in many industries and applications, providing a reliable and efficient way to connect and secure various components.

HAIYAN BOLT CO., LTD. supplies and manufactures custom bolts for every industry, including construction and electronics. Our online selection includes almost 9, 000 different styles, bolt sizes and materials, including carbon and stainless steel anchor bolts, carriage bolts, elevator bolts, eye bolts, frame bolts, heavy hex bolts, tension control bolts, toggle bolts, and more. Select A325 structural bolts for your heavy construction jobs or machine lifting eye bolts for your hoisting applications. Toggle bolts are a great choice for anchoring in drywall.

HAIYAN BOLT CO., LTD. is always here to help so if you can’t find the exact bolt you need for your application, please contact us.

Items list including:Concrete screw, Hex wood screw, Hex flange wood screw, hex socket wood screw, Self tapping screw, Self drilling screw, Drywall screw, Chipboard Screw, Machine screw, Furniture screw

Material:

1. Stainless Steel: SUS201, SUS304, SUS316, SUS410

2. Carbon Steel: C1006, C1008, C1010, C1018, C1022, C10B21, C10B33, C1035, C1045, C435#, 40CrMo.

Diameter: 2.5, 3, 3.5, 4, 4.5, 5, 6, 7.5, 8, 10, 12 (3/16, 1/4, 5/16, 3/8, 1/2, 5/8 and 3/4-inch)

Length: 6mm to 400mm

3. Finish: polish plain, passivate, zinc plated, nickel, color.

4. Drive: slotted, phillips, pozi-drive, indented hex, hex, socket, square, snake eye, socket pin, tri-wing, torq-set, torx, spline, polydrive, pentalobular, one-way

5. Head type: pan, flat, round, oval, truss, hex, socket, button

6. Thread type: AB, A, B, BP, C, D or 1, F, G, T, BF, BG or H, BZ or 25, U, Standard.

Screws are widely used in various fields for their unique functions. Here are some of their main uses:

  ● Construction Industry: In building construction, screws are used to fasten wooden components together, such as in the construction of frames, roofs, and floors. They are also used to attach drywall to studs, providing a stable and smooth surface. In addition, screws are employed to secure metal brackets and fixtures to walls and ceilings.

  ● Furniture Making: Screws play a crucial role in assembling furniture. They are used to join wooden or metal parts, ensuring the stability and durability of the furniture. Whether it's a table, chair, or cabinet, screws are used to hold the pieces together firmly.

  ● Automotive Industry: In cars and other vehicles, screws are used to assemble various components, including the engine, chassis, and body panels. They hold together the mechanical parts, ensuring proper alignment and functioning. Screws are also used to attach interior components such as seats, dashboard panels, and door trims.

  ● Electronics Industry: Screws are used to secure the casing of electronic devices such as computers, laptops, smartphones, and tablets. They allow for easy disassembly and reassembly for repair and maintenance purposes. Additionally, screws are used to attach circuit boards and other internal components within the device.

  ● Appliance Manufacturing: In household appliances like refrigerators, washing machines, and ovens, screws are used to assemble the various parts. They hold the outer shell, internal components, and control panels in place, ensuring the proper functioning of the appliance.

 ● DIY and Home Repair: Screws are a staple in DIY projects and home repairs. They are used to hang pictures, install shelves, repair broken furniture, and perform various other tasks around the house. Their ease of use and versatility make them a go - to tool for homeowners and hobbyists.

HAIYAN BOLT CO., LTD. supplies and manufactures custom screws for every industry, including construction and electronics. Our online selection includes almost 9, 000 different styles, screw sizes and materials, including carbon and stainless steel Concrete screw, Hex wood screw, Hex flange wood screw, hex socket wood screw, Self tapping screw, Self drilling screw, Drywall screw, Chipboard Screw, Machine screw, Furniture screw

HAIYAN BOLT CO., LTD. is always here to help so if you can’t find the exact bolt you need for your application, please contact us.

Nut series including: Hex nut, Hex Jam nut, Heavy hex nut, Hex flange nut, hex domed cap nut, hex coupling nut, Round coupling nut, Nylon insert nut, Spring Nut, Wing nut, Castle nut, Tee claw nut, pallet nut, Welding nut, Rivet nut, Square nut.

Thread: UNC, UNF

Material: Stainless Steel / Carbon Steel , low carbon steel(mild steel), middle carbon steel, alloy steel, stainless steel (SS201,  SS304, SS316), and brass, aluminium alloy.

SAE Class: 2, 5.8 ASTM A194 2H. Metric Class: Grade 4, 6, 8, 10, 12

Metric Size: M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33

Inch size: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 2", 2-1/4"

Surface finish: Plain finish, Black, Black Oxide, Black Zinc Coating, Hot Dip Galvanized(HDG),  Zinc Plated, Yellow ZP, Brass coating, Nickle plated, Chrome plating, Dacromat, Geomet, etc.

Packing: 20-25kg Carton+Pallet   (bulk packing OR small box packing)

Nuts are widely used in various mechanical and construction applications. Here are some of their main uses:

1. Fastening and Joining: Nuts are primarily used in combination with bolts or screws to fasten two or more components together. They create a secure and tight connection by threading onto the threaded shaft of a bolt or screw. This is crucial in machinery, automotive, and aerospace industries to ensure the stability and integrity of the assembled structures. For example, in a car engine, nuts are used to hold together various parts such as the cylinder head, engine block, and connecting rods.

2. Adjusting and Securing: Nuts can be used to adjust the position or tension of components. In mechanical systems, they are often used to secure adjustable parts, allowing for fine - tuning and precise positioning. For instance, in a bicycle, nuts are used to adjust the tension of the spokes in the wheels, ensuring proper balance and strength.

3. Load - Bearing: Nuts are capable of withstanding significant forces and loads. In construction and infrastructure projects, they are used in steel structures, bridges, and buildings to connect beams, columns, and other structural elements. The ability of nuts to distribute and bear loads evenly helps to maintain the stability and safety of the entire structure.

4. Electrical and Plumbing Applications: In electrical systems, nuts are used to connect wires and terminals, providing a secure electrical connection. In plumbing, they are used to join pipes and fittings, ensuring leak - free connections. For example, in a household electrical panel, nuts are used to fasten the wires to the circuit breakers, and in a plumbing system, nuts are used to connect water pipes and faucets.

HAIYAN BOLT CO., LTD. supplies and manufactures custom nuts for every industry, including construction and electronics. Our online selection includes almost 9, 000 different styles, nut sizes and materials, including Hex nut, Hex Jam nut, Heavy hex nut, Hex flange nut, hex domed cap nut, hex coupling nut, Round coupling nut, Nylon insert nut, Spring Nut, Wing nut, Castle nut, Tee claw nut, pallet nut, Welding nut, Rivet nut, Square nut.

HAIYAN BOLT CO., LTD. is always here to help so if you can’t find the exact bolt you need for your application, please contact us.

Items list including: Flat washer, Spring washer, EDPM washer, Square washer, Wave washer, Curve washer, Spherical washer, Internal tooth lock washer, Extenal tooth lock washer, F436 Structural washer, Internal retaining ring for bores, conical spring washer, countersunk washer, square wedge-shaped washer.

1. Standard including: DIN125, DIN126, DIN127, DIN9021, DIN6796, DIN6916, DIN7349, DIN6797 etc and open to customized design.

2. Brand: HB

3. Material: Stainless Steel / Carbon Steel, low carbon steel(mild steel), middle carbon steel, alloy steel, stainless steel (SS201,  SS304, SS316), and brass, aluminium alloy.

4. SAE Class: 2, 5.8 ASTM A194 2H.F436. Metric from 4 to 10

5. Metric Size: M3, M4, M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33

Inch size: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 2", 2-1/4"

6. Surface finish: Plain finish, Black, Black Oxide, Black Zinc Coating, Hot Dip Galvanized(HDG), Zinc Plated, Yellow ZP, Brass coating, Nickle plated, Chrome plating, Dacromat, Geomet, etc.

7. Packing: 20-25kg Carton+Pallet   (bulk packing OR small box packing)

Washers are small, flat, circular discs made of metal, plastic, or other materials. They are widely used in various fields for the following purposes:

Spreading Load: Washers are often placed between a nut and a bolt or a screw and a surface. Their primary function is to distribute the load over a larger area. This helps prevent the surface from being damaged by the concentrated force of the fastener and reduces the risk of the material around the hole from deforming or cracking. For example, in machinery, when a bolt is tightened, the washer ensures that the pressure is evenly spread, protecting the connected parts.

Providing a Smooth Surface: They offer a smooth and even surface for the nut or bolt to bear against. This is particularly important in applications where the mating surfaces are not perfectly flat or smooth. The washer compensates for any irregularities, allowing for a more secure and stable connection. In woodworking, when attaching metal hardware to wood, washers can help create a better contact surface as wood surfaces may have some roughness.

Preventing Loosening: Washers can act as a locking mechanism to some extent. Some types of washers, such as spring washers, exert a spring - like force that helps keep the nut or bolt tight. They counteract the vibrations and shocks that might otherwise cause the fastener to loosen over time. In automotive applications, washers are used on various bolts and nuts to ensure that they remain securely fastened even under the constant vibrations of the engine and the movement of the vehicle.

Adjusting Thickness and Spacing: Washers can be used to adjust the thickness or spacing between components. By stacking multiple washers or using washers of different thicknesses, the distance between two parts can be precisely controlled. This is useful in applications such as assembling mechanical components where a specific clearance or alignment needs to be achieved. In electronics, when mounting components on a circuit board, washers can be used to provide the right amount of space between the component and the board.

HAIYAN BOLT CO., LTD. supplies and manufactures custom washers for every industry, including construction and electronics. Our online selection includes almost 9, 000 different styles, washer sizes and materials, including carbon and stainless steel Flat washer, Spring washer, EDPM washer, Square washer, Wave washer, Curve washer, Spherical washer, Internal tooth lock washer, Extenal tooth lock washer, F436 Structural washer, Internal retaining ring for bores, conical spring washer, countersunk washer, square wedge-shaped washer.

HAIYAN BOLT CO., LTD. is always here to help so if you can’t find the exact bolt you need for your application, please contact us.