Black Nylon Hardware Nuts Bolts Metric M8 Standard Hex Nut Din 934 Standard
Black Nylon Hardware Nuts Bolts Metric M8 Standard Hex Nut Din 934 Standard
Standard DIN 934 plastic hexagon nuts with black color , fire resistance class UL94V-2
Material
Hexagon Nut are made from plastic nylon with grade PA 66
Class for fire resistance
UL94V-2
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
| Thread diameter | M8 |
| Height h | 7.6 |
| Width F | 13 |
| Pitch | 1.25 |
| Width across corner G | 14.5 |
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 | M8 |
| Thread length | ±0.2 |
| Head height | ±0.1 |
| Head diameter | ±0.1 |
All sizes are in millimeter
Characteristics
Wear resistance
Plastic hexagon nuts have higher hardness 118 after improved chemical elements .
Good self-lubricant
Self lubricant make plastic hexagon nuts are more resistant wear and a longer service .
High mechanical property
Resistant high temperature
Normally , plastic hexagon nuts 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 hexagon nuts 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 hexagon nuts can be workable at -30℃
Environment friendly
Plastic hexagon nuts meet RoHS or REACH environmental production standard .
Application
Plastic hexagon nuts normally to be used with a threaded shaft or screws to secure objects , a vast application in many fields like :
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
| d | m | s | e |
| 1.6 | 1.3 | 3.2 | 3.41 |
| 2 | 1.6 | 4 | 4.32 |
| 2.5 | 2 | 5 | 5.45 |
| 3 | 2.4 | 5.5 | 6.01 |
| 4 | 3.2 | 7 | 7.66 |
| 5 | 4.7 | 8 | 8.79 |
| 6 | 5.2 | 10 | 11.05 |
| 8 | 6.8 | 13 | 14.38 |
| 10 | 8.4 | 16 | 17.77 |
| 12 | 10.8 | 18 | 20.03 |
| 16 | 14.8 | 24 | 26.75 |
| 20 | 8 | 30 | 32.95 |
Note : we accept customized sizes for plastic hexagon nuts .
Get in Touch
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