M3 Flat Head Clear Acrylic Screw Plastic Phillips Drive for
Electronics
Flat head plastic PC machine screws are made from PC (Polycarbonate
) , phillips drive and full threads flat point . standard sizes .
Material
Plastic PC flat head machine screws are made from plastic PC
(Polycarbonate ) apparent material with good fire resistance .
Physical Performance
| Density ( g/cm3) | 1.2 |
| Water absorption % | 0.1～0.15 |
| Shrinkage % | 0.1～0.2 |
Mechanical Property for Plastic PC Machine Screws
| Tensile strength MPa | 103 |
| Compressive strength at 20% tension kgf/mm2 | 80 |
| Elongation at break % | 3 |
| Bending strength MPa | 165 |
| Modulus of elasticity for bending MPa | 8270 |
| Notched Impact Strength MPa(kgf/mm) | 110 |
| Hardness HR | 90 |
| Modulus of elasticity for tension MPa | 2280 |
Thermal Performance for Plastic PC Machine Screws
| Heat distortion temperature ℃ | 115～127 |
| coefficient of linear expansion k | 0.00007 |
| Normal working temperature ℃ | 110～130 |
| Brittle temperature ℃ | -100 |
| Melting temperature ℃ | 130 |
| Pyrogenic decomposition temperature ℃ | 350 |
Electrical Performance for Plastic PC Machine Screws
| Specific volume resistance Ω·cm | 1E + 18 |
| Heat conduction W/m.K | 0.13～0.2 |
| Dielectric constant | 3 |
Fire Resistance Class for Plastic PC Machine Screws
UL94V-0
Environment Friendly Standard
RoHS and REACH
Specification for Plastic PC Machine Screws
| Thread diameter | C | M3 |
| Thread length | L | 12 |
| Head height | H | 2 |
| Head diameter | D | 5.6 |
All sizes are in millimeter
Tolerance for Plastic PC Machine Screws
Normal tolerances for plastic PC machine screws based on your
requests and refer to ISO 2768 standard for unspecified tolerances
.
| Thread diameter | M3 |
| Thread length | ±0.2 |
| Head height | ±0.1 |
| Head diameter | ±0.1 |
All sizes are in millimeter
Features for Plastic PC Machine Screws
▲ High resistant impact
▲ Perfect electrical performance
▲ Odorless with environment protection
▲ Low shrinkage
Generally , it is 0.1%~0.2%
▲ Stable dimensions
▲ High refractivity
Refractivity is 1.578 based on ISO 489 standard
▲ Good thermal stability
Plastic PC machine screws can work in -100℃ to 130℃
▲ Fine shininess
▲ Inhibiting bacterial
▲ Fire resistance
The grade for fire resistance is UL94V-0 without any additive
▲ Hard with good elongation
▲ Perfect apparent performance
Transparency is up to 90% .
▲ Good insulation
▲ Resistance to corrosion
Resistant to acid , salty , oil and alcohol .
▲ Wide working temperature
Plastic PC machine screws can be operated from -100℃ to 130℃ and
brittle temperature below -100℃
Applications for Plastic PC Machine Screws
As outstanding performances , Plastic PC machine screws are widely
used to various fields in industry especially for fields with high
tensile strength and hard working conditions .
▲ Car industry
▲ Household appliances
▲ Official equipments
▲ High level toys
▲ Precise electrics
▲ Aerospace
▲ Petro industry
▲ Technology and research device
More specifications for Plastic PC Machine Screws
We are providing standard plastic screws from M1.0 to M8
| Diameter | Head diameter | Head height |
| M1 | 2 | 0.6 |
| M1.2 | 2.4 | 0.7 |
| M1.4 | 2.8 | 0.85 |
| M1.6 | 3.2 | 0.95 |
| M1.7 | 3.4 | 1 |
| M2 | 4 | 1.2 |
| M2.2 | 4.4 | 1.3 |
| M2.3 | 4.6 | 1.35 |
| M2.5 | 5 | 1.45 |
| M2.6 | 5.2 | 1.5 |
| M3 | 6 | 1.75 |
| M3.5 | 7 | 2 |
| M4 | 8 | 2.3 |
| M4.5 | 9 | 2.55 |
| M5 | 10 | 2.8 |
| M6 | 12 | 3.4 |
| M8 | 16 | 4.4 |
Note : Length of plastic screws can be talked according to your
specific requirements . above data are just for flat head plastic
screws .
