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What are the specifications and models of titanium screws?

Jul 14, 2025

Titanium screws are widely used in aerospace, medical, chemical, and other fields due to their high strength, light weight, and corrosion resistance. Common specifications and models are mainly based on international standards (such as ISO, DIN, ANSI, etc.) and industry demands.

 

 
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A. Classify by thread type:

1)Metric Thread

Standards: ISO 4762, ISO 7380

Common specifications: M3, M4, M5, M6, M8, M10, M12, M16, etc.

2)Unified Thread

Standard: ANSI/ASME B18.2.1

Common specifications: 1/4'-20, 5/16'-18, 3/8'-16, 1/2'-13, etc.

3) Other threads

Self-Tapping Thread (self-Tapping Thread) : used for thin plates or plastics.

Fine Thread: Used for high-precision connections.

 

B. Classify by the type of screw head:

1) Hex Head screw

Standards: ISO 4762, DIN 933

Common specifications: M3-M20.

2) Socket Head Cap Screw

Standards: ISO 4762, DIN 912

Common specifications: M2-M24.

3) Countersunk Head screw (Countersunk head) :

Standards: ISO 10642, DIN 7991

Common specifications: M3-M12.

4) Button Head:

Standards: ISO 7380, DIN 7380

Common specifications: M3-M12.

5) Other head shapes

Flat Head screws, Pan Head screws, etc.

 

C. Classify by the material of the screws:

1) Pure titanium screws (Grade 1-4) :

Grade 1: Relatively soft and has good corrosion resistance.

Grade 2: Commonly used, with excellent overall performance.

Grade 3/4: Higher strength, but more difficult to process.

2) Titanium alloy screws (Grade 5, Grade 23, etc.) :

Grade 5 (Ti-6Al-4V) : High strength, widely used in aerospace.

Grade 23 (Ti-6Al-4V ELI) : Medical grade, with better biocompatibility.

 

D. Classify by the purpose of the screws:

1)  Screws for aerospace

High strength and high-temperature resistance, Grade 5 material is commonly used.

2)  Medical screws

High biocompatibility is required, and Grade 23 material is commonly used.

3)  Screws for chemical industry

High corrosion resistance is required, and pure titanium material is commonly used.

 

Customized specifications:

Titanium screws can be customized according to requirements, including:

Special dimensions (non-standard lengths, diameters).

Special surface treatments (such as anodizing, coating).

Special thread types (such as left-hand thread).

 

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