Flat Head White Nylon Screw M6 Cross Recessed Plastic Fastener
Standard cross recessed flat head screws are made from plastic nylon with fire resistance class UL94V-2 , flat point design and full threads to secure working pieces .
Typical features
Low friction and good self-lubricant for a long service
Wide working temperature from -30℃ to 150℃ for the most areas with different climate .
Colorful choices for many demands
Assorted sizes with customized designs for your suitable requirements .
Material
Plastic cross recessed flat head screws are made from nylon PA 66 that with good performances .
Physical Performance
| Density ( g/cm3) |
1.14 |
| Water absorption % |
3 |
| Shrinkage % |
1～2 |
Mechanical Property
| Tensile strength MPa |
60～80 |
| Elongation at break % |
2.2 |
| Bending strength MPa |
100～120 |
| Modulus of elasticity for bending MPa |
2000 ～3000 |
| Notched Impact Strength(J/m) |
60～100 |
| HR hardness |
118 |
Electrical Performance
| Dielectric constant |
1.63 |
| Arc resistance sec |
130～140 |
| Specific volume resistance Ω·cm |
1.83×1015 |
| dissipation factor |
100～400 |
| Dielectric strength(kV/mm) |
20～30 |
Thermal Performance
| Normal working temperature ℃ |
80～120 |
| Brittle temperature ℃ |
-30℃ |
| Melting temperature ℃ |
252 |
| Pyrogenic decomposition temperature ℃ |
350℃ |
| Matin heatproof ℃ |
50～60 |
Specification
Plastic cross recessed flat head screws are based on DIN 965 .
| Thread diameter |
M6 |
| Thread length |
35 |
| Head height |
3.2 |
| Head diameter |
10.5 |
| Socket |
PH 2 |
All sizes are in millimeter
Tolerances
General size tolerances are ±0.1 – 0.2 mm , and according to ISO 2768 for unmarked tolerances .
| Thread diameter D |
M6 |
| Thread length L |
35 |
| Head height K |
3 |
| Head diameter dk |
11 |
All sizes are in millimeter
Characteristics
Wear resistance
Plastic cross recessed flat head screws has a higher hardness 118 after improved chemical elements .
Good self-lubricant
Self lubricant make plastic cross recessed flat head screws are more resistant wear and a longer service .
High mechanical property
Resistant high temperature
Normally , plastic cross recessed flat head screws can be operated smoothly at temperature 150℃ and thermal deformed temperature is up to 250℃ when parts with glass fiber .
Perfect elongation
Elongation at break is 2.2% according to ISO 527 testing method .
Corrosion resistance
Plastic cross recessed flat head screws can be resistant of the most chemicals on corrosion .
Good insulation
Specific volume resistance is 1.83×1015 and resistance to high breakdown voltage support part to be good insulated .
Resistant impact
60 – 80 KJ/M2 normally .
Resistant fire
Generally , the fire resistance is UL94V-2 and UL64V-0 for special parts .
Resistance to low temperature
Plastic cross recessed flat head screws can be workable at -30℃
Environment friendly
Plastic cross recessed flat head screws meet RoHS or REACH environmental production standard .
Application
Plastic cross recessed flat head screws are widely used to various fields that with light load and strict conditions on corrosion resistance and insulation as perfect features .
1 , Car industry
2 , Household appliances
3 , Official equipments
4 , Toy items
5 , Electrics
6 , Aerospace
7 , Sports equipments
8 , Technology and research device
More Specifications
Normally , plastic cross recessed flat head screw specification from M2.5 to M10 .
| D |
M2.5 |
M3 |
M3.5 |
M4 |
M5 |
M6 |
M8 |
M10 |
| dk |
4.7 |
5.6 |
6.5 |
7.5 |
9.2 |
11 |
14.5 |
18 |
| K |
1.5 |
1.65 |
1.93 |
2.2 |
2.5 |
3 |
4 |
5 |
D : diameter
dk : head diameter
K : head height
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