DIN 931 Zinc Plated Carbon Steel Hex Head Bolts M6 M10 M14 Grade 8.8 12.9 Partial Thread Construction Fasteners

Product Description

DIN 931 zinc plated carbon steel hex head bolts are partially threaded fasteners designed for strong and reliable mechanical connections. The product features a standard hexagonal head, a smooth shank section, and a threaded end, making it suitable for applications where alignment, clamping force, and structural stability are required.

Made from carbon steel and available in strength grades 8.8 and 12.9, these bolts provide high fastening performance for construction hardware, machinery assembly, steel structures, equipment installation, and general industrial use. The zinc plated surface provides a clean silver appearance and helps improve corrosion resistance for normal indoor and dry-environment applications.

The hex head design allows easy installation with standard wrenches or sockets. The partial thread structure helps reduce thread contact along the full bolt length, making the bolt suitable for assemblies requiring shear strength through the unthreaded shank area.

Product Features

Product Advantages

1. Standard DIN 931 Design
   Manufactured according to DIN 931 structure, with a hex head and partial thread design.
2. High Strength Options
   Grade 8.8 and Grade 12.9 carbon steel options are suitable for different load requirements.
3. Zinc Plated Surface
   The zinc plated finish gives the bolt a clean metallic appearance and provides basic surface protection.
4. Partial Thread Structure
   The unthreaded shank helps improve positioning and shear performance in bolted assemblies.
5. Easy Installation
   The hexagonal head allows convenient tightening and removal with common hand tools or power tools.

Specification Table

Applications

DIN 931 hex head bolts are widely used in:

FAQ

Q1: What is the difference between DIN 931 and DIN 933 bolts?

A: DIN 931 bolts are partially threaded, while DIN 933 bolts are fully threaded. The product shown is a partial thread hex head bolt, so DIN 931 is more suitable.

Q2: What material is this bolt made of?

A: This bolt is made of carbon steel.

Q3: What surface treatment does this bolt have?

A: The bolt has a zinc plated surface treatment with a silver / blue-white zinc appearance.

Q4: What strength grades are available?

A: Grade 8.8 and Grade 12.9 are available.

Q5: Where can this bolt be used?

A: It can be used in construction hardware, machinery assembly, steel structures, equipment installation, and general industrial fastening.

Q6: Can you supply different sizes?

A: Yes. Common metric sizes include M6, M10, M14, and other sizes can be supplied according to order requirements.