AS Coach Screw

Railway Sleeper Coach Screws

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Description

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.

AS Coach Screw Specifications:

	5 1/2 ” AS Coachscrew	6 5/16” AS Coachscrew
Length	139.7mm±3.18mm	160.34mm±3.18mm
Diameter & Neck	Minor φ 17.46mm±0.38mm Major φ 23.8mm±0.38mm Neck φ 25.4mm±0.38mm×14.29mm	Minor φ 17.46mm±0.38mm Major φ 23.8mm±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	@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#	BS64, GB 699-88, 45# or 35#
Tensile strength	550-700 N/mm	550-700 N/mm
Surface treatment	Hot Dipped Galvanised (HDG)	Hot Dipped Galvanised (HDG)
Weight	Approximate 0.6kg	Approximate 0.7kg
Elongation	15%	15%

Description

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