Self-tapping screw DIN 7981-C d4,2x50 zinc flake black PH2
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Article no.
7981-4,2-50цпчph
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Specifications |
|
| Article no. |
7981-4,2-50цпчph |
| Field of application | Construction |
| Base material | Metal |
| Turnkey size, mm | 2 |
| Coating | Flake black zink |
| Standard | DIN 7981, ГОСТ 1144-80, ISO 7049, ГОСТ 10621-80 |
| Diameter, mm | 4.2 |
| Length, mm | 50 |
| Head | Semicircular |
| Material | Stal |
| Popular name | Universal self-tapping screw |
| Type of carving | Full |
| Slot | Cruciform(PH) |
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Self-tapping screws with a semicircular head are fasteners consisting of a metric thread and a head with slots for different types of nozzles.
Scope used wherever you need to collect a metal product through a prepared hole, because they require pre-drilling
Material steel
Coating: black zinc cloth. Main characteristics of this coating:
- Organic black topcoat;
- Excellent corrosion protection;
- High hiding power on silver and black base coatings;
- Attractive uniform black appearance;
- Very good chemical resistance; increased UV resistance;
- Excellent adhesion, i.e. the coating does not peel, crack or flake even under mechanical stress or chemical attack;
- Integrated lubricant component for controlled friction characteristics;
- No hydrogen embrittlement;
- Excellent corrosion resistance in NSST and cyclic corrosion tests.
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