High-Strength Black Hex Head Bolts Full Thread DIN933 | Alloy Steel Grade 12.9 | M5–M36 Metric Fasteners

Product Description

Product Overview

These High-Strength Black Hex Head Full Thread Bolts are precision-engineered fasteners for heavy-duty mechanical, industrial, and construction applications. Made from Grade 12.9 alloy steel, these bolts offer exceptional tensile strength, durability, and resistance to wear and deformation. Manufactured according to DIN933 standards, the fully threaded design ensures maximum clamping force along the entire bolt length. Available in sizes M5, M6, M8, M10–M36, these black-coated bolts combine high performance with corrosion resistance, making them ideal for automotive, machinery, and structural assembly projects.

Key Features

• Premium Material: Alloy steel grade 12.9 for superior strength and long service life.
• DIN933 Standard: Fully threaded hex bolts with precise dimensions for reliable and consistent performance.
• Full Thread Design: Ensures maximum grip and clamping along the entire bolt length.
• Black Coating: Enhances corrosion resistance and provides a professional industrial appearance.
• Hex Head: Compatible with standard wrenches, spanners, or socket tools for easy installation.
• Wide Size Range: M5–M36 metric sizes cover both light and heavy-duty applications.

Specifications Table

Applications

1. Industrial Machinery: Secure and durable fastening for high-stress components.
2. Automotive: Engine, chassis, suspension, and rotating parts assembly.
3. Construction & Structural Work: Metal frameworks, heavy-duty fastening, and machinery mounting.
4. DIY & Workshop Projects: Provides professional-grade performance for hobbyists and technicians.
5. Outdoor and Harsh Environments: Black-coated surface improves resistance to corrosion and wear.

FAQ (Frequently Asked Questions)

Q1: What is Grade 12.9 alloy steel?
A1: Grade 12.9 alloy steel is a high-strength material with excellent tensile strength and resistance to wear, suitable for heavy-duty and high-stress applications.

Q2: What does DIN933 standard mean?
A2: DIN933 specifies fully threaded hex head bolts with precise dimensions, ensuring consistent quality and reliable performance.

Q3: Can these bolts be used with standard nuts?
A3: Yes, use metric nuts of the same thread size for secure fastening.

Q4: Does the black coating provide corrosion resistance?
A4: Yes, the black finish adds protection against rust and environmental exposure.

Q5: How do I install these hex bolts?
A5: Use a suitable wrench, spanner, or socket tool, tightening to the recommended torque. Ensure proper alignment to avoid thread damage.