DIN 933 Hot Dip Galvanized Carbon Steel Hex Bolts Grade 8.8 M12 M14 M16 M18 M20

These DIN 933 hex head bolts are produced from carbon steel and finished with hot dip galvanizing for improved corrosion resistance in outdoor, structural, and industrial environments. The full-thread DIN 933 design gives strong thread engagement and is widely used where reliable clamping and easy installation are required.

Grade 8.8 is the main strength grade for this product, making it suitable for medium to high-strength fastening in machinery, construction hardware, and steel structures. Other available grades include 4.8, 10.9, and 12.9, allowing buyers to choose the correct strength level according to load requirements, installation conditions, and mating components.

Specification Table

Key Features

• DIN 933 full-thread hex bolt design for stable metric fastening.
• Carbon steel material for strength, durability, and cost-effective bulk supply.
• Main grade 8.8 for stronger industrial and construction fastening needs.
• Available grades include 4.8, 8.8, 10.9, and 12.9 for different load levels.
• Hot dip galvanized surface treatment helps improve corrosion resistance.
• Main sizes include M12, M14, M16, M18, and M20 for common project use.
• Wider M8-M72 size range and 15-500mm length range support customized orders.
• Plastic bag and carton packaging suitable for wholesale and export supply.

Material and Grade Explanation

Carbon steel is a practical material for industrial hex bolts because it offers stable mechanical performance, efficient production, and competitive cost for large-volume purchasing. It is suitable for machinery assembly, construction fastening, metal brackets, steel frames, equipment installation, and general engineering use.

Grade 8.8 is a commonly selected high-strength metric bolt grade for structural and industrial applications. For lighter general fastening, grade 4.8 can be selected. For applications requiring higher mechanical strength, grade 10.9 or 12.9 can be supplied according to project requirements.

Hot Dip Galvanized Finish

Hot dip galvanizing forms a zinc coating on the bolt surface, helping protect carbon steel against rust in outdoor and humid environments. This finish is commonly used for construction projects, steel structures, guardrails, bridge hardware, towers, outdoor machinery, and infrastructure fastening where corrosion resistance is important.

Compared with ordinary untreated carbon steel bolts, hot dip galvanized hex bolts are better suited for long-term exposure conditions. The finish also provides a recognizable silver-gray appearance that is widely accepted in construction and industrial procurement.

Applications

These DIN 933 hot dip galvanized carbon steel hex bolts can be used in steel structures, construction engineering, machinery assembly, equipment installation, metal frame connection, brackets, guardrails, pipe supports, agricultural machinery, power facilities, and general industrial maintenance.

They are suitable for contractors, fastener distributors, hardware wholesalers, machinery manufacturers, steel structure fabricators, and buyers who need metric hex bolts in bulk quantities.

Packaging and Supply

Standard packaging can include plastic bags and cartons for practical handling, storage, and shipping. Packaging can be arranged according to bolt size, order quantity, export requirements, and customer purchasing plan.

Samples can be freely supplied for specification checking and purchase evaluation. Bulk orders can be supported from Handan, Hebei, China, with delivery time generally arranged within 3-15 days depending on size, quantity, finish, and stock status.

FAQ

Q1: What material are these DIN 933 hex bolts made from?

A1: They are made from carbon steel.

Q2: What is the main grade of this product?

A2: The main grade is 8.8. Available grade options include 4.8, 8.8, 10.9, and 12.9.

Q3: What sizes are included for this product?

A3: The main sizes are M12, M14, M16, M18, and M20. The available size range can cover M8-M72, with length options from 15mm to 500mm.

Q4: What surface treatment is used?

A4: The surface treatment is hot dip galvanized, which helps improve corrosion resistance for outdoor and construction applications.

Q5: What standard does this bolt follow?

A5: The main standard is DIN 933. DIN, ASME, GB, JIS, and ISO standard options are also available for different market requirements.

Q6: Can samples be supplied?

A6: Yes, We can provide samples to verify specifications, coating, and confirm if the product is compatible.

Q7: What packaging is available?

A7: The bolts can be packed in plastic bags and cartons. Packaging can be adjusted according to order quantity and shipping requirements.

Q8: Where are the bolts supplied from?

A8: The bolts are supplied from Handan, Hebei, China.

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