M2.5 Titanium Alloy Cylindrical Head Socket Cap Screw

 

M2.5 titanium alloy cylindrical head socket head cap screws are lightweight, high-strength, and corrosion-resistant precision fasteners. The main material is Ti-6Al-4V (Grade 5/TC4), conforming to DIN 912/ISO 4762 standards. The thread specification is M2.5×0.45 (coarse thread). They are widely used in aerospace, precision electronics, medical devices, and other applications where weight and reliability are critical.

 

 

Thread specification: M2.5, Nominal diameter: 2.5mm

Thread pitch: 0.45mm (Coarse thread standard (DIN 912), fine thread option: 0.35mm)

Head diameter (D): 4.5 mm +0/-0.18 mm

Head height (H): 2.5 mm +0/-0.14 mm

Hexagonal socket size (J): 2.0mm (Requires a 2.0mm hex wrench)

Head drive depth (P): 1.1 mm (Standard internal hexagon countersink depth)

Nominal length (L) 4~30mm (common) 4/5/6/8/10/12/16/20/25/30mm

Thread length: Full thread / Partial thread; Short lengths are fully threaded, long lengths are partially threaded (according to standard).

Standard: DIN 912 / ISO 4762 General standard for socket head cap screws

 

 

Ti (Titanium): Excess material | Base material, lightweight, corrosion-resistant

Al: 5.5~6.75 ; Strengthens the α phase, improving strength and heat resistance.

V: 3.5~4.5;  Stabilizes the β phase, improving toughness and weldability.

Fe: ≤0.30 ; Impurities; content is controlled to ensure purity.

C: ≤ 0.08 ; Impurities, to prevent carbide embrittlement.

N: ≤ 0.05 ; Impurities, affecting plasticity

H: ≤ 0.015 ; Impurities, to prevent hydrogen embrittlement

O: ≤ 0.20 ; Impurities; controlling oxygen content ensures ductility.

 

 

Tensile strength (σb) ≥ 895 MPa, approximately 1.5 times that of 304 stainless steel.

Yield strength (σ0.2) ≥ 828 MPa High strength, strong resistance to deformation

Elongation (δ5) ≥10% Possesses a certain degree of toughness and is not easily brittle.

Hardness (HRC): 33~38 Medium hardness, wear-resistant and machinable.

Density: 4.51 g/cm³, approximately 57% of stainless steel (7.93 g/cm³), demonstrating a significant advantage in terms of lightweight properties.

Temperature resistance: -196~300℃ (Suitable for long-term use at ≤300℃, and can withstand higher temperatures for short periods.)

Corrosion resistance: Excellent; resistant to atmospheric conditions, seawater, acids and alkalis (non-strong oxidizing agents), non-magnetic.

Non-magnetic: Suitable for medical equipment, precision electronics, and magnetic-sensitive applications.

Biocompatibility: Grade 5 titanium alloy can be used in implantable medical devices (additional surface treatment required);

Surface treatment: Natural finish (acid pickling/passivation), anodizing (colored, improves wear resistance and insulation), chemical polishing (high cleanliness, suitable for semiconductor/medical applications);

 

 

1. Raw Materials: Ti-6Al-4V bar stock (Grade 5), inspected, straightened, and peeled to ensure no defects;
2. Cold Heading: Using a multi-station cold heading machine, the cylindrical head and internal hexagonal hole are formed in one step, ensuring dimensional accuracy and density of the head;
3. Thread Machining: Thread rolling (full thread) or thread cutting (partial thread), thread accuracy 6g, smooth surface, no burrs;
4. Heat Treatment: Solution treatment + aging (β annealing + aging) to improve strength and toughness and eliminate processing stress;
5. Surface Treatment: Pickling and passivation (to remove oxide scale and form a passivation film), anodizing (optional), chemical polishing (cleanroom grade);
6. Inspection: 100% dimensional inspection (caliper/projector), mechanical property sampling inspection (tensile strength/hardness), salt spray test (corrosion resistance), non-destructive testing (critical parts);
7. Packaging: Anti-static bags/clean boxes, suitable for export and precision equipment assembly.

 

 

• Aerospace: Structural components and electronic compartment fasteners for drones, satellites, and aircraft models; crucial for lightweighting and weight reduction;
• Precision Electronics: Internal fasteners for mobile phones, laptops, cameras, and servers; features include non-magnetic properties, lightweight design, and corrosion resistance;
• Medical Devices: Surgical instruments, implantable device components, and medical equipment casings; features include biocompatibility and corrosion resistance;
• Automotive Modification: Lightweight components for racing cars and new energy vehicles; weight reduction improves performance;
• Semiconductor/Optoelectronics: FPD (Flat Panel Display) manufacturing equipment, semiconductor packaging equipment; features include cleanliness, non-magnetic properties, and corrosion resistance;
• Outdoor/Marine: Photographic equipment, outdoor gear, and precision components for ships; features include seawater corrosion resistance and lightweight design.

 

 

 

Q: How does this M2.5 titanium alloy cylindrical head socket cap screw was manufactured?

A: Briefly speaking, M2.5 titanium alloy cylindrical head socket cap screw was hot-forged==>machined==>polished.

 

Q: Can you make LOGO on the M2.5 titanium alloy cylindrical head socket cap screw?

A: We can laser engraving customers logo for free.

 

Q: What is the MOQ on the M2.5 titanium alloy cylindrical head socket cap screw?

A: Our MOQ on the M2.5 titanium alloy cylindrical head socket cap screw is 10 pcs.

 

 

E-mail: garychen3215@hotmail.com

Address: No.35, Baoti Rd, Baoji city, Shaanxi Province, China

Contact: Mr. Gary Chen

Phone: +86-917-8883215

Mobile/WhatsApp: +86 13092900605

 

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