DIN933 Zinc Plated Carbon Steel Hex Bolt and Nut Set Grade 10.9 GB Standard Various Lengths

This hex bolt and nut set is manufactured for buyers who need standard carbon steel fasteners with multiple grade, size, length, and surface treatment options. The bolt uses a hex head design, making it convenient to tighten or remove with common wrenches, sockets, and installation tools.

The listed standard is DIN933, and available standard options include DIN, ASME, GB, ISO, and industrial standards. This makes the product suitable for buyers working with different project specifications, equipment drawings, maintenance requirements, and export market standards.

The product material is carbon steel. Carbon steel is widely used in bolts because it provides stable strength, good processing performance, and cost‑effective bulk production. It is suitable for machinery, construction, steel components, general assembly, repair parts, and distributor stock.

The size range covers M3‑M72, including imperial‑related diameter options from 3/16 inch to 4 inch. Length options can cover 10mm‑500mm, making the product suitable for compact assemblies, medium‑length fastening, structural components, equipment frames, and longer connection positions.

Specification Table

Key Features

• DIN933 hex bolt option for standard full‑thread fastening applications.
• Carbon steel material for reliable strength and cost‑effective bulk supply.
• Grade 10.9 main option for higher‑strength industrial fastening.
• Additional grades include 4.8, 6.8, 8.8, and 12.9 for different load requirements.
• Zinc plated surface treatment provides a clean finish and practical corrosion protection.
• Black oxide, plain, zinc, and hot dip galvanized finishes are also available.
• M3‑M72 size range supports small hardware, machinery, construction, and heavy‑duty fastening.
• Length range from 10mm to 500mm supports flexible project and inventory requirements.
• Hex head design allows easy tightening with standard tools.
• Matching nuts can be supplied, with 2 nuts per bolt available.
• DIN, ASME, GB, ISO, and industrial standard options support different purchasing markets.
• Samples are available before bulk order confirmation.

Material and Grade Explanation

The product is made from carbon steel, which is commonly selected for bolts and nuts because it offers a practical balance of strength, manufacturing stability, and purchasing cost. Carbon steel bolts are suitable for general industrial use, machinery installation, steel frames, brackets, repair work, warehouse stock, and construction fastening.

• Grade 4.8 is suitable for general fastening positions where high strength is not required.
• Grade 6.8 can be used for medium‑duty applications.
• Grade 8.8 is widely used in machinery, equipment, and construction connections requiring stronger fastening performance.
• Grade 10.9 is the key grade for this product and is suitable for higher‑strength assembly positions.
• Grade 12.9 can be selected for applications requiring even higher strength, depending on the working load, mating components, tightening method, and project design.

For safe purchasing, the required bolt grade should be matched with the correct nut grade, thread specification, installation torque, joint material, and working environment.

Surface Treatment Options

The main finish is zinc plated. Zinc plating gives the fastener a bright, clean surface and helps improve corrosion resistance for indoor, dry, and general industrial applications. It is commonly used for machinery, hardware supply, assembly lines, storage racks, equipment components, and maintenance parts.

• Black oxide can be selected for applications where a black appearance is preferred.
• Plain finish can be used for indoor or further‑treated applications.
• Hot dip galvanized finish can be selected when stronger rust resistance is needed for outdoor, humid, or exposed installation environments.

The final surface treatment can be selected according to the application environment, appearance requirement, corrosion resistance demand, and purchasing budget.

DIN933 and GB Standard Fastening Use

DIN933 hex bolts are generally used as full‑thread hex head bolts. Full‑thread design is useful when thread engagement is needed along most or all of the bolt length, especially in machinery parts, brackets, threaded holes, metal assemblies, and replacement fastening positions.

GB standard options are suitable for buyers who use Chinese standard fastener specifications in construction, factory maintenance, equipment manufacturing, and domestic or export project procurement. DIN, ASME, ISO, and industrial standard options provide more flexibility for different drawings and market requirements.

Recommended Application Areas

Machinery Assembly: Suitable for machine frames, equipment bases, covers, brackets, motor mounts, support plates, and repair components.

Construction Fastening: Suitable for construction hardware, steel members, metal plates, guardrails, pipe supports, warehouse racks, and general structural connection points.

Industrial Maintenance: Suitable for repair stock, replacement fasteners, workshop maintenance, factory spare parts, and equipment servicing.

Wholesale Distribution: The wide size range, multiple grades, and surface finish options make the product suitable for fastener distributors, hardware wholesalers, project buyers, and mixed‑size inventory orders.

Packaging and Supply

Packaging can be arranged according to bolt size, nut matching requirement, order quantity, and export shipment needs. Common packaging methods can include small package, carton, and pallet arrangements for convenient storage, warehouse handling, and transportation.

Professional, practical, and efficient packaging helps protect the goods during transport and supports wholesale and project delivery. Samples are available for checking size, thread, finish, grade marking, and overall suitability before confirming bulk production.

Bulk supply is available from Handan, Hebei, China. Delivery time is generally 5‑15 days depending on size, grade, surface treatment, quantity, and production schedule.

Buyer Specification Checklist

For a faster quotation, buyers can prepare the following details:

• Required standard: DIN933, GB, DIN, ASME, ISO, or industrial standard.
• Required diameter: for example M3‑M72 or inch size requirement.
• Required length: from 10mm to 500mm.
• Required grade: 4.8, 6.8, 8.8, 10.9, or 12.9.
• Required material: carbon steel.
• Required surface treatment: zinc plated, black oxide, plain, zinc, or hot dip galvanized.
• Nut requirement: bolts only or bolts with 2 nuts per bolt.
• Thread requirement: UNC or project‑specified thread.
• Quantity, packaging method, and destination market.
• Sample requirement and expected delivery schedule.

FAQ

Q1: What material is this hex bolt and nut set made from?

A1: It is made from carbon steel.

Q2: What is the main grade for this product?

A2: The main grade is 10.9.

Q3: What grades are available?

A3: Available grades include 4.8, 6.8, 8.8, 10.9, and 12.9.

Q4: What is the main surface treatment?

A4: The main surface treatment is zinc plated.

Q5: Are other surface treatments available?

A5: Yes. Black oxide, plain, zinc finish, and hot dip galvanized options are also available.

Q6: What standard does this product follow?

A6: The main standard is DIN933. DIN, ASME, GB, ISO, and industrial standard options are also available.

Q7: What size range can be supplied?

A7: The size range is M3‑M72, with inch size options from 3/16 inch to 4 inch.

Q8: What length range is available?

A8: Length options can cover 10mm‑500mm.

Q9: Can the bolts be supplied with nuts?

A9: Yes. Matching nuts are available, and 2 nuts per bolt can be supplied according to order requirements.

Q10: Is a sample available?

A10: Yes. Samples are available for checking size, thread, finish, and product suitability.

Q11: What is the MOQ?

A11: The MOQ is 10 pieces.

---

Contact Hotop Fasteners for DIN933 zinc plated carbon steel hex bolt and nut sets.

Send your required standard, size, length, grade, surface treatment, nut requirement, thread type, packaging method, and order quantity to receive a fast quotation and suitable bulk supply solution.