VEDALI HARDWARE CO., LTD
VEDALI HARDWARE CO., LTD Professional Hardware Supplier Perfect Engineering Solutions
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2.5 mm Stainless Steel PT Screws for Plastic Phillips Flat Head A2 Fastener
Flat Head PT@ Thread Screws
Harden material
Phillips Drive No.2
Wider thread distance
Flat head PT@ thread screw is also known as Thread forming screw , it has a wider pitch and thinner threads compared to common tapping threads , this design increases shear areas and support a more good material flowing performance when it is installed .
Key Characteristics
◆ Harden material
◆ High tensile strength
◆ Fast thread drilling performance
◆ Good material flowing performance
◆ High clamping load performance
◆ Reduce radial stresses
Specification
| d | 1.8 | 2.2 | 2.5 | 3 | 3.5 | 4 | 5 |
| d2 | 3.2-3.6 | 3.6-3.9 | 4.1-4.4 | 5.0-5.3 | 5.7-6.1 | 6.6-7 | 8.4-8.8 |
| Head angle | 90° | 90° | 90° | 90° | 90° | 90° | 90° |
| k | 1.1 | 1.3 | 1.5 | 1.75 | 2.1 | 2.4 | 3.2 |
d : thread diameter dk : head diameter
PT@ screws are normally used to secure plastics , there is a pre-drilling hole before install a screw , the hole diameter and depth are different for different plastic materials .
| Plastic material | Screw thread diameter “ d “ | Pre-drilling hole diameter | Pre-drilling hole depth |
| PC | d | 0.85d | 2d |
| PA | d | 0.75d | 1.7d |
| ABS | d | 0.8d | 2d |
| ASA | d | 0.78d | 2d |
Installation
1 . Drill a pre-hole in material with pre-depth for screw ( see details in table )
2 . Insert screw into hole and screwing it in a wrench .
Finishing
| Finishing | Colors | Thickness | Charicteristic |
| Zinc | Blue ,White ,Black ,Yellow | 5-107μm | Bright and smooth surface ,corrosion resistance |
| Nickel | Silver | 1～3μm | Wear resistance ,bright appearance , anti-corrosion |
| Tin | Silver | 0.13～1.27μm | Good ductility ,corrosion resistance ,lower melting point ,eco-friendly ,brightness |
| Brass | Copper | 5gm～8gm | Good dispersibility ,Bright appearance |
| Chrome | Silver white | 0．25～0．5μm | Harden surface ,Bright surface ,Heat resistance ,Wear resistance Corrosion resistance and eco-friendly
|
Materials
Hex socket flat head PT screws are made from stainless steel 304 .
Additional materials
Carbon steel with model 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO
Stainless steel with model SUS 201 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 .
Application
PT@ Thread Screws are used for various plastics
Competitive Advantages
※ Top quality with cheap price
※ Strict dimensions control and high precision
※ All Screws are eco-friendly
※ Quick delivery
※ Perfect sales-after service
We provide stainelss steel PT screws as well , and different head and drive types , please contact us for more information about PT screws .