Round head screw with square neck DIN 603, steel, strength class 8.8, zinc-plated, blue passivated (A2K)
DIN 603 steel 8.8, zinc plated
SCR-MHD-DIN603-8.8-(A2K)-M5X25
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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 timber construction, especially carpentry, pre-fabricated housing, vehicle construction (e.g. truck load platforms), boat building, trade fair construction, scaffolding, for heavy, separable transport racks or machines crates, transport crates for sea transport. Used to join wooden parts or wood and metal parts. The square neck is sunk into the wood. Bore diameter is dependent on thread dimension. For joining wood to wood, a larger washer must be placed under the nut, e.g. a wood construction washer.
 | |
Thread type x nominal diameter (d1) | M5 |
Length (l1) | 25 mm |
Material | Steel |
Property class | 8.8 |
Surface | Zinc plated |
Head diameter (dk) | 13.55 mm |
Head height (k1) | 3.3 mm |
Square width (V) | 5.48 mm |
Square height (f) | 4.10 mm |
Standards | DIN 603 |
RoHS-compliant | Yes |
Head type | Cup head square neck |
Head details | With square neck |
Thread type | Metric thread |
Pitch | 0.8 mm |
Thread form | Standard metric thread |
Shank diameter | 5 mm |
Thread length (metric thread) (b) | 17 mm |
Product class | C |
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