Can round head bolts be customized?

2025-09-05

As a manufacturer with extensive experience in fastener production, we specialize in providing fully customizable round head bolts tailored to meet specific project requirements. Customization is not just an option; it’s a critical service for industries that demand precision, durability, and compatibility.

Whether you need round head bolts for automotive, construction, machinery, or marine applications, we offer end-to-end customization covering dimensions, material, finish, and performance attributes.


Key Customization Parameters for Round Head Bolts

Below are the primary parameters we customize based on client needs:

1. Dimensions and Specifications

  • Diameter: M2 to M48 (metric) or #0 to 2" (imperial)

  • Length: 5mm to 500mm

  • Thread Type: Fine, coarse, full or partial threading

  • Head Height and Diameter: Adjusted per assembly clearance requirements

2. Material Selection
Different environments require different materials. We offer:

  • Stainless Steel (A2/A4)

  • Carbon Steel (Grade 4.8 to 12.9)

  • Alloy Steel

  • Brass

  • Titanium

  • Aluminum

3. Surface Treatment
Enhance corrosion resistance and appearance with:

  • Zinc Plating

  • Hot-Dip Galvanizing

  • Black Oxide

  • Chrome Finish

  • Dacromet Coating

  • Phosphating

4. Performance and Certification

  • Strength Grades: 4.8, 8.8, 10.9, 12.9

  • Certifications: ISO 9001, DIN, ANSI, ASTM compliant

  • Testing: Salt spray, torque tension, hardness, and fatigue testing


round head bolts

Customization Options in Detail

To help you understand what’s possible, here’s a breakdown of typical customizations for round head bolts:

Feature Standard Options Custom Options
Head Type Round head (standard) Domed, low-profile, or slotted round head bolts
Drive Type Phillips or Slotted Hex socket, Torx, square, or custom drive
Thread Type ISO metric or UNC Whitworth, BSW, left-hand thread, or self-tapping
Material Steel or stainless steel Super alloys, non-magnetic materials, high-temp variants
Coating/Finish Zinc-plated or plain Custom colors, lubricated coatings, anti-corrosion treatments
Packaging Standard cartons Labeled, barcoded, or industry-specific kitting

Why Choose Custom Round Head Bolts?

Off-the-shelf fasteners often fall short in specialized applications. Custom round head bolts ensure:

  • Perfect Fit: Designed to exact specifications for your assembly.

  • Enhanced Performance: Tailored material and treatment improve corrosion resistance, strength, and lifespan.

  • Cost Efficiency: Reduce waste and assembly time with purpose-built fasteners.

  • Compliance: Meet industry-specific standards (e.g., automotive, aerospace, food machinery).


Applications of Custom Round Head Bolts

These bolts are used in a wide range of industries:

  • Automotive: Engine assemblies, chassis systems

  • Construction: Structural connections, façade installations

  • Electronics: Device housing, internal mounting

  • Marine: Boat building, dock equipment

  • Heavy Machinery: Agricultural, mining, and industrial equipment


Get a Quote or Sample

We provide prototyping and small-batch production for testing, along with full-scale manufacturing. Share your drawings, specifications, or application needs, and we’ll deliver round head bolts that match your exact requirements.

If you are very interested in Hebei Dongshao Fastener Manufacturing's products or have any questions, please feel free to contact us.

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