Railway sleeper coach screws, also called screw spikes or chair screws, are usually used to fix wooden railway sleepers with tie plates or rail chairs.
Coach screws are designed with a square head at the top and a cylindrical shaft with external threads on the other end. The railway sleeper coach screw used by Kingrail Parts is carbon steel with a tensile strength of 550-700 N/mm. Both the design and materials help wedge the coach screws easily and provide a solid hold.
6 5/16” M Coachscrew | |
Length | 160.34mm±3.18mm |
Diameter & Neck | Minor φ 20.64mm±0.38mm Major φ 26.19mm±0.38mm Neck φ 25.4mm±0.38mm×14.29mm |
Square head & Thickness | @Top 16.99mm A/F +0mm -0.76mm @Bottom 28.58 A/F +0mm -0.76mm 31.75mm from top to underside of head ±1.27mm |
Material | BS64, GB 699-88, 45# or 35# |
Tensile strength | 550-700 N/mm |
Surface treatment | Hot Dipped Galvanised (HDG) |
Weight | 0.7kg |
Elongation | 15% |
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