Zinc Plated Carbon Steel Hex Head Bolts Grade 6.8 8.8 DIN

Product Details

These hex head bolts are made from carbon steel and supplied with zinc plated surface treatment for a clean appearance and practical corrosion protection in general industrial environments. The hex head design allows easy tightening with standard wrenches, sockets, and installation tools, making the bolts suitable for both manual assembly and production‑line use.

The main listed strength grades are 6.8 and 8.8. Grade 6.8 is suitable for medium‑duty fastening where stable clamping performance is required, while grade 8.8 provides higher strength for machinery, steel components, equipment installation, and structural connection points. For broader purchasing needs, grade 4.8, 10.9, and 12.9 options can also be supplied according to project requirements.

The available size range is M8‑M72, covering common metric bolt diameters for industrial, construction, and equipment applications. The product follows DIN standard requirements and can be used for distributors, project contractors, machinery factories, repair workshops, and fastener wholesalers that need stable bulk supply.

Specification Table

Key Features

• Carbon steel material for stable strength and cost‑effective bulk purchasing.
• Zinc plated surface treatment for clean appearance and general corrosion protection.
• Grade 6.8 and 8.8 options for medium‑duty and higher‑strength fastening.
• Extended grade range from 4.8 to 12.9 for different engineering needs.
• M8‑M72 size range for construction, machinery, and industrial applications.
• DIN standard supply for regular project and wholesale procurement.
• Small pack, carton, and pallet packaging for export and warehouse handling.
• Samples can be supplied for specification checking before bulk orders.

Material and Grade Explanation

Carbon steel is widely used for hex head bolts because it combines mechanical strength, processing efficiency, and economical production cost. It is suitable for everyday industrial fastening and large‑volume procurement.

Grade 6.8 bolts are commonly used for medium‑duty connections, equipment assembly, and general structural fastening. Grade 8.8 bolts offer higher tensile strength and are suitable for machinery, frames, brackets, and load‑bearing metal parts. For applications requiring lighter‑duty or higher‑strength fastening, grade 4.8, 10.9, and 12.9 options can be selected according to installation conditions.

Surface Treatment

Zinc plating provides a protective surface layer that helps reduce oxidation during storage, transportation, and normal use. It also gives the bolt a cleaner metallic appearance, making it suitable for hardware channels, machinery assembly, construction projects, and equipment maintenance. For projects with special outdoor or heavy corrosion requirements, the surface treatment should be selected according to the working environment.

Applications

These zinc plated carbon steel hex head bolts are suitable for steel structures, equipment frames, machinery assembly, construction hardware, metal brackets, industrial maintenance, agricultural machinery, warehouse racking, pipe supports, and general fastening work.

They are a practical choice for buyers who need one bolt series covering multiple grades and sizes. The M8‑M72 range can support standard stock replenishment, project‑based purchasing, and customized fastening solutions.

Packaging and Supply

The bolts can be packed in small packs, cartons, and pallets to support retail, wholesale, and export shipment. Packaging can be arranged according to order quantity, shipping method, and buyer requirements. Bulk orders can be supplied for distributors, engineering contractors, machinery factories, and construction hardware channels.

FAQ

Q1: What material is used for these bolts?

A1: The bolts are made from carbon steel.

Q2: What grades are available?

A2: The main listed grades are 6.8 and 8.8. Available grade options include 4.8, 6.8, 8.8, 10.9, and 12.9.

Q3: What size range can be supplied?

A3: The listed size range is M8‑M72.

Q4: What is the surface treatment?

A4: The listed surface treatment is zinc plated.

Q5: What standard does this product follow?

A5: The listed standard is DIN.

Q6: Can samples be supplied?

A6: Yes. Samples can be supplied for checking size, surface finish, and specification before bulk purchasing.

Q7: What packaging is available?

A7: Packaging can be arranged as small pack, carton, and pallet for bulk and export orders.

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Send your required bolt size, grade, quantity, packaging method, and destination market to get a fast quotation.

Hotop Fasteners can support zinc plated carbon steel hex head bolts for wholesale, construction, machinery, steel structure, and industrial fastening orders.