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DIN931 Titanium Hexagon Head Bolts

Item name:DIN931 Titanium Hexagon head bolts
Material:Titanium Grade 2,Grade 5,Grade 7,Grade 9,Grade 12,etc
Standard:DIN931/ISO4014,DIN933/ISO4017
Specs:M1.5–M64*Length
Customization Available:Non-standard sizes,special thread profiles,extended shank diameters,irregular threads,etc.

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Description

Products introduction

DIN931 Titanium Hexagon head bolts are hexagonal fasteners manufactured from titanium alloy through precision forging, machining, and thread rolling processes. Featuring a standard hexagonal head, these fasteners are installed using open-end wrenches or sockets and are among the most widely used bolt types in industrial applications. Compared to internal hex designs, external hex screws can withstand higher tightening torques and facilitate bulk assembly using power tools. Their standard hex head design allows for easy installation and removal, and they combine lightweight construction, high strength, and excellent corrosion resistance, making them an ideal fastening solution for the aerospace, marine engineering, medical device, high-end machinery, and aftermarket sectors.

Specifications and Parameters

Thread Specifications: M5 / M6 / M8 / M10 / M12 / M14 / M16 / M20, lengths from 10 mm to 200 mm (customizable)
Length Range: 6 mm – 300 mm
Standards: German Standards DIN 933, DIN 931; American Standards ASTM B348, AMS 4965; International Standard ISO 4014
Thread precision: 6g / 6H
Customization options: Non-standard dimensions, special thread profiles, extended shank lengths, special-shaped threads, etc.
Thread: Standard ISO metric coarse thread; fine thread available upon request (e.g., M10×1.25)
Available head types: Standard hex head, flanged hex head (Flanged Hex, with built-in washer surface for improved anti-loosening performance)

Common Specifications and Parameters

Thread Specifications	Head to Opposite Side s (mm)	Head Thickness k (mm)	Recommended Tightening Torque GR5 (N·m)
M5	8.0	3.5	5.8
M6	10.0	4.0	10
M8	13.0	5.3	25
M10	17.0	6.4	49
M12	19.0	7.5	86
M16	24.0	10.0	215

Manufacturing Processes and Quality

Each titanium alloy hex head screw undergoes a rigorous production process:

Raw material inspection → Warehousing
Cutting → Head forming/forging
CNC machining → Dimensional inspection
Precision thread rolling (threads) +30% fatigue life
Cleaning and deburring → Vacuum annealing for stress relief
Final inspection → Finished product warehousing → Packaging and shipping

Each batch of finished products undergoes inspection for thread accuracy and hardness to ensure the surface is free of cracks and burrs and that the screws offer excellent assembly compatibility.

Surface Treatment

Pickled: Silver-gray metallic luster, industrial-grade appearance
Anodized: Gold, blue, purple, green, and other colors-suitable for the aftermarket
PVD Coating: TiN gold, DLC black; decorative and enhances surface hardness
Polished: Bright mirror finish or satin finish

Note: Hex head screws are ideal for anodizing, and colored hex heads create a striking visual effect on modified vehicles.

Key Features

1. 42% lighter: Density of 4.51 g/cm³, resulting in significant weight reduction for the entire vehicle or machine (for example, replacing a full set of motorcycle wheel hub bolts can reduce weight by several hundred grams)

2. High Strength: TC4 has a tensile strength of ≥895 MPa and a yield strength of ≥825 MPa, making it suitable for most applications where Grade 8.8–10.9 steel bolts are used

3. Rust-Free: Corrosion resistance in seawater, salt spray, and acidic or alkaline environments far exceeds that of stainless steel, making it an ideal choice for marine engineering

4. Fatigue Resistance: Titanium alloys have a high fatigue limit, making them suitable for applications subject to vibration (engines, suspensions, propellers)

5. Non-magnetic: Does not interfere with instruments, compasses, or electronic equipment

6. High-Torque Compatibility: The external hexagonal design provides a large load-bearing surface; when used with a socket, it allows for higher preload and is less prone to stripped threads (compared to internal hex)

Products Applications

🏍️ Motorcycle/Car Modifications: Wheel bolts, caliper mounts, exhaust systems, engine compartment fasteners
✈️ Aerospace: Aircraft structural components, drone frames (please inquire separately for applications requiring aerospace material certification)
🌊 Marine/Offshore Engineering: Marine fasteners, seawater pumps and valves, offshore platform equipment-maintenance-free and rust-resistant
🏭 Petrochemicals: Equipment flange connections for chloride-ion-resistant and acid/alkali-resistant operating conditions
🚲 Bicycles/Electric Motorcycles: Disc brake adapters, rear dropouts, load-bearing components (hex head bolts + matching nuts)
🏥 Medical Devices: Imaging equipment, mounting of non-magnetic surgical instruments