Hexagon socket set screw with truncated cone ISO 4026 steel 45H, zinc flake silver (ZFSHL)
ISO 4026 steel 45H zinc flake
SCR-FLPT-ISO4026-45H-HS10-ZFSHL-M20X20
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Zinc flake coatings are chrome (VI)-free corrosion protection coatings for commercial vehicle construction, construction machines, agricultural vehicles and equipment, and all other fields that require vehicle construction standard corrosion protection requirements.
The corrosion resistance of ZFHSL is as follows:
- Diameter ≥ M6 - 480h*
- Diameter ≥ M10 - 720h*
The designation ZFSHL refers to the following corrosion coating:
- Zinc flake coating, with top coat, silver colour, with lubrication that alters the friction coefficient.
- Adjusted friction coefficient range from 0.09μ - 0.14μ due to top coat with integrated lubricating particles
Hardness class 45H corresponds to a hardness of 450 HV
Steel set screws are intended for use under compressive stress only (see also DIN EN ISO 898-5). Typical uses include clamping in an adjusting ring or applying pressure to a counterpart. Steel set screws are therefore extremely hard in order to ensure torsional strength in the hexagon socket during tightening/loosening.
Tip:
A2/A4 stainless steel set screws are not specially hardened and may be used for tensile loads.
ISO 4026 replaces DIN 913 | There is some similarity | Nominal diameters for M1.4, M1.8, M14, M18, M22 are removed | Hardness classes for stainless steels introduced.
Datasheets(X)
 | |
Thread type x nominal diameter (d1) | M20 |
Length (l1) | 20 mm |
Diameter of flat point (d2) | 15 mm |
Internal drive (s1) | HS10 |
Standards | ISO 4026 |
Material | Steel |
Surface | Flake zinc silver |
Hardness category | 45H |
Drive type | Hexagon socket |
Thread type | Metric thread |
Thread form | Standard metric thread |
Shape of tip | Truncated cone |
RoHS-compliant | Yes |
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