DIN 6918 Square Taper Washer
Square taper washer DIN 6918 for HV fasteners on channels with 8% flange slope: C45 steel, hot-dip galvanized, or A2/A4. FLOK supplies it to standard.
The square taper washer with a wedge-shaped cross-section to DIN 6918 has two grooves on its upper surface, located on opposite sides of the central hole. The washer is designed for assembling high-strength friction-grip (HV) connections when joining steel channels with an 8% flange slope.
The washer’s design increases the bearing area and protects the base surface from damage, providing a more secure fastener fit. The two grooves prevent the threaded fastener from loosening under external impact loads.
DIN 6918 fasteners are made from high-strength steel with increased carbon content. For corrosion protection, the parts are hot-dip galvanized. Fasteners made of A2 and A4 stainless steel grades require no additional protection — high corrosion resistance is inherent in the material properties.
Materials:
- C45 quenched-and-tempered steel
- Steel with coating: hot-dip galvanized
Dimensions of DIN 6918 square taper washers, in mm:
| d | a | b | e | h |
|---|---|---|---|---|
| 13 | 26 | 30 | 3.7 | 4.9 |
| 17 | 32 | 36 | 4.45 | 5.9 |
| 21 | 40 | 44 | 5.25 | 7 |
| 23 | 44 | 50 | 6 | 8 |
| 25 | 56 | 56 | 6.26 | 8.5 |
| 28 | 56 | 56 | 6.26 | 8.5 |
| 31 | 62 | 62 | 6.52 | 9 |
| 37 | 68 | 68 | 6.68 | 9.4 |
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