DIN 933 Carbon Steel Hex Bolts Zinc Plated Black Finish

The bolt features a standard hex head that can be tightened with common wrenches, sockets, and assembly tools. Carbon steel material provides practical mechanical strength for industrial and construction fastening, while the available grade range allows the buyer to match bolt performance with the required working load.

For regular hardware use, zinc plated finish offers a clean appearance and basic corrosion protection. Black finish is suitable for machinery, metal equipment, and applications where a darker surface appearance is preferred. Plain finish can be used when the bolts will receive further processing or be used in controlled indoor conditions. Hot dip galvanized finish is available for projects that require stronger outdoor rust resistance.

The product can be supplied with nuts, with two nuts per bolt available according to the listed configuration. Packaging can be arranged as small pack, carton, and pallet, making it suitable for wholesale distributors, equipment manufacturers, construction contractors, and export orders.

Specification Table

Key Features

• Carbon steel material for reliable industrial fastening and cost‑effective bulk supply.
• Grade 4.8, 6.8, 8.8, 10.9, and 12.9 options to match different strength requirements.
• DIN 933 hex bolt design suitable for full‑thread fastening applications.
• M8x30mm and M10x30mm sizes are suitable for machinery, frames, brackets, and equipment assembly.
• Zinc plated, black, plain, and hot dip galvanized finishes available.
• Nuts can be supplied together for complete bolt‑and‑nut fastening sets.
• Small pack, carton, and pallet packaging support retail, wholesale, and export purchasing.
• Customization is available for drawings, samples, special lengths, and project orders.

Material and Grade Explanation

Carbon steel is a common material for hex bolts because it offers a strong balance between mechanical performance, processing efficiency, and procurement cost. Grade 4.8 and 6.8 bolts are suitable for general fastening and light to medium‑duty assembly.

Grade 8.8 bolts provide higher tensile strength and are often used for machinery, steel components, industrial fixtures, and structural connections. Grade 10.9 and 12.9 bolts are selected when higher strength is required. These grades are commonly used in heavy machinery, load‑bearing equipment, engineering structures, and fastening points that require stronger clamping performance. Buyers can choose the grade according to the installation torque, working load, mating material, and service environment.

Surface Treatment Options

Zinc plated finish gives the bolt a bright protective layer and is widely used for general hardware, equipment assembly, and indoor or semi‑indoor fastening. Black finish gives the bolt a dark appearance and is often used in machinery, metal products, and industrial equipment. Plain finish is suitable for simple fastening or additional surface processing. Hot dip galvanized finish can be selected when the bolt will be used outdoors or in environments where stronger corrosion resistance is needed.

Applications

These DIN 933 carbon steel hex bolts can be used in mechanical equipment, industrial production lines, steel frames, mounting brackets, maintenance projects, construction hardware, agricultural machinery, vehicle repair, warehouse structures, pipe supports, and general metal connection work.

For buyers who need one product family covering different strength levels, this bolt series is practical because it supports common metric sizes, multiple finishes, and a wide grade range. It is suitable for both daily stock replenishment and project‑based procurement.

Packaging and Supply

Products can be packed in small packs, cartons, and pallets. This packaging structure helps protect bolts during storage and transportation while making counting, warehouse handling, and export shipment easier. Bulk orders, customized labels, carton marks, and pallet packing plans can be discussed according to the purchasing channel and destination market.

FAQ

Q1: What material is this hex bolt made from?

A1: The bolt is made from carbon steel.

Q2: What grades are available?

A2: Available grades include 4.8, 6.8, 8.8, 10.9, and 12.9. The listed product title focuses on grade 8.8 and 10.9.

Q3: What are the main sizes for this product?

A3: The main listed sizes are M8x30mm and M10x30mm. The available size range can cover M8‑M72.

Q4: What surface finishes can be supplied?

A4: Plain, zinc plated, black, and hot dip galvanized finishes are available.

Q5: Can nuts be supplied with the bolts? A5: Yes. Nuts are available, and the listed configuration supports two nuts per bolt.

Q6: What standards can the bolts follow?

A6: DIN 933 is the main listed standard. DIN, ASME, GB, JIS, and ISO standard options can also be supplied.

Q7: Can the bolts be customized?

A7: Yes. Custom sizes, drawings, samples, surface treatments, packaging, and bulk order requirements can be discussed.

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Send your required size, grade, surface treatment, quantity, and packaging preference to get a quotation.

Hotop Fasteners can supply DIN 933 carbon steel hex bolts for machinery, construction, industrial assembly, wholesale distribution, and export projects.