Standard Hardware Nuts Bolts M4 Metric Fine Thread Plastic Hex Nuts DIN 934
Standard Hardware Nuts Bolts M4 Metric Fine Thread Plastic Hex Nuts DIN 934
Standard plastic PC hex nuts with hexagonal profile and a threaded hole in the centre to secure pieces with a threaded bolt or screw , no burrs and sharp edges hard surface and high tensile strength for wide applications .
Material
Hex Nuts are made from plastic PC (Polycarbonate)
Class for fire resistance
UL94V-0
Key Features
Corrosion resistance
Resistance to fire
Wear proof
Resistance to high temperature and low temperature
High light transmittance
High tensile strength
Physical Performance
| Density ( g/cm3) | 1.2 |
| Water absorption % | 0.1～0.15 |
| Shrinkage % | 0.1～0.2 |
Mechanical Property
| 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
| 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
| Specific volume resistance Ω·cm | 1E + 18 |
| Heat conduction W/m.K | 0.13～0.2 |
| Dielectric constant | 3 |
Specification
| Thread diameter | M4 |
| Height H | 3.5 |
| Width F | 7.0 |
| Pitch | 0.7 |
| Width across corner G | 8 |
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 | M4 |
| Thread length | ±0.2 |
| Head height | ±0.1 |
| Head diameter | ±0.1 |
All sizes are in millimeter
Characteristics
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
PC parts 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
Plastic PC hex nuts are resistant to acid , salty , oil and alcohol .
Wide working temperature
Plastic PC hex nuts can be operated from -100℃ to 130℃ and brittle temperature below -100℃
Application
Plastic PC hex nuts normally to be used with a threaded shaft or screws to secure objects , a vast application in many fields like medical equipment ,electrics ,vessel ,precise meter and instrument ,aerospace .
Additional 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 PC hex nuts .
Get in Touch
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