DIN 931 / ISO 4014 Partial-Thread Steel Hex Bolts, Grades 4.8–10.9, Zinc/Black Oxide/HDG

Product Description

Product Name:

DIN 931 / ISO 4014 Hex Head Bolt – Metric Half Thread, High Strength Steel, Grades 4.8–10.9, Zinc / Black Oxide / HDG – XZ FASTENER

Product Overview

This DIN 931 / ISO 4014 Hex Head Bolt is a high-strength, half-thread metric bolt manufactured from premium carbon steel. Designed for reliable and secure fastening in industrial and machinery applications, it ensures stability and load-bearing capacity. The bolt is available with multiple surface treatments, including Zinc Plating, Black Oxide, and Hot-Dip Galvanized (HDG), providing corrosion protection for indoor and outdoor environments.

Technical Specifications

Key Features

1. High Strength Performance – Manufactured from carbon steel grades 4.8, 8.8, and 10.9 to ensure excellent tensile and torque performance.
2. Half-Thread Design – Provides flexibility in clamping and load distribution, ideal for mechanical assemblies.
3. Multiple Surface Treatments –
   • Zinc Plating: Cost-effective corrosion protection for indoor use.
   • Black Oxide: Provides mild corrosion resistance and low surface reflection.
   • HDG: Thick coating for outdoor and high-humidity environments.
4. Standards Compliance – Meets DIN 931 and ISO 4014 requirements for dimensions and mechanical performance.
5. Versatile Industrial Use – Suitable for machinery, steel structures, and heavy-duty industrial applications.

Buyer Reference

• Selection Guidance: Match bolt diameter, thread length, and strength grade with design requirements. Ensure half-thread length suits the thickness of your assembly.
• Torque Reference (approximate, for reference only):
  • M8, Grade 8.8: 24 N·m
  • M10, Grade 8.8: 49 N·m
  • M16, Grade 8.8: 150 N·m
• MOQ: Flexible; supports sample orders and bulk orders.
• Shipping Options: EXW / FOB / CIF / DDP; standard packaging suitable for export.

Common Questions / Purchasing Concerns

1. What is the difference between DIN 931 and ISO 4014?
   • DIN 931 is the German standard; ISO 4014 is the international standard. Dimensions and tolerances are compatible, and bolts can be used interchangeably.
2. Can I order custom lengths or surface treatments?
   • Yes. We support custom lengths, grades, and finishes according to your project requirements.
3. Do you provide material certificates?
   • Yes. EN 10204 3.1 Material Certificates and ISO 9001 production certification are available upon request.
4. Is this bolt suitable for outdoor use?
   • For outdoor or high-humidity environments, HDG (Hot-Dip Galvanized) finish is recommended for optimal corrosion resistance.
5. How do I select the correct grade?
   • Use Grade 4.8 for light-duty, Grade 8.8 for standard industrial use, and Grade 10.9 for high-strength applications. Always check torque and load specifications for your design.