Headless Hexagon Bolts

1. What are Headless Hexagon Bolts?

Headless hexagon bolts, also known as set screws, consist of a cylindrical body that is fully threaded from end to end. One end features a hexagonal socket, while the other is slightly recessed. At Quang Thai, we manufacture set screws in diameters ranging from M16 to M24, with lengths between 20mm and 60mm, adhering to German DIN 916 standards or the international ISO 4029 standard.

 

 

Material Options

Quang Thai primarily produces set screws using the following materials:

• Carbon steel: S45C, C45, etc.
• Alloy steel: 40Cr, SS400, SCM 435, etc.
• Stainless steel: A2-70, SUS 304, SUS 316, etc.

Strength Grades

Our set screws are available in strength grades ranging from 4.6 to 12.9, with the most commonly used grades being 10.9 and 12.9, as well as stainless steel options for specific applications.

Surface Treatments

Depending on the material and strength requirements, Quang Thai offers various surface treatments, including:

• Black oxide coating
• Hot-dip galvanization
• Electro-galvanization
• Geomet and Dacromet coatings

Among these, electro-galvanization, black oxide coating, and untreated finishes are the most commonly used due to their suitability for various applications.

3. Applications of Headless Hexagon Bolts

Thanks to their compact and simple design, set screws are widely used in assembly and manufacturing, alongside standard bolts. Some of their key applications include:

🗹 Mechanical engineering and assembly – Used in automotive, motorcycle, and railway industries.
🗹 Industrial machinery – Securely fastening machine components in manufacturing equipment.
🗹 Household and commercial installations – Commonly found in showerheads, kitchen cabinets, televisions, and other everyday appliances.

 

4. Pricing Factors for Headless Hexagon Bolts

The cost of set screws depends on several factors:

• Material: Different materials come with varying costs.
• Standards: Different manufacturing standards influence mechanical properties, strength grades, dimensions, and material ion, leading to price variations.
• Strength Grade: Higher strength grades typically come at a higher cost. For example, DIN 916 grade 12.9 screws are more expensive than grade 10.9 or 8.8 screws.
• Size: Larger diameter and longer screws cost more. For example, an M24 screw is pricier than an M22, and an M20x60 costs more than an M20x50.
• Surface Treatment: Each coating method has a different cost depending on its benefits. For instance, hot-dip galvanization is generally more expensive than electro-galvanization.

5. Why Choose Quang Thai for Screws?

Quang Thai is a trusted manufacturer and supplier of high-quality set screws in southern Vietnam. As a leading provider of custom fasteners and connection materials, we are committed to offering the best quality at the most competitive prices. Our focus on quality ensures reliability and customer satisfaction in every product.

☎ Contact us at +84 933 220 468 for expert advice and the best product recommendations. We look forward to serving you!