Round head screw with square neck DIN 603, steel 4.8, zinc-plated, blue passivated (A2K)
DIN 603 steel 4.8 zinc plated
SCR-MHD-DIN603-4.8-(A2K)-M8X20
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The flat square neck fixes the round head screw e.g. in a slot and allows tightening from the nut side without counter-tensioning.
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Use in wood construction, especially carpenter's workshops, pre-fabricated house construction, vehicle construction (e.g. truck load platforms), boat building, trade fair construction, scaffolding construction, for heavy, demountable transport racks or machine crates and transport crates for sea transport. Used to join wooden parts or wood and metal parts. The square neck is sunk into the wood. Hole diameter is dependent on thread dimensions. For joining wood to wood, a larger washer must be placed under the nut, e.g. a wood construction washer.
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Material | Steel |
Property class | 4.8 |
Surface | Zinc plated |
Thread type x nominal diameter (d1) | M8 |
Length (l1) | 20 mm |
Head diameter (dk) | 20.65 mm |
Head height (k1) | 4.55 mm |
Square width (V) | 8.58 mm |
Square height (f) | 5.6 mm |
Standards | DIN 603 |
RoHS-compliant | Yes |
Head type | Cup head square neck |
Head details | With square neck |
Thread type | Metric thread |
Pitch | 1.25 mm |
Thread form | Standard metric thread |
Product class | C |