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screws and fasteners,
Blue Metal Siding Screws Thread Cutting Hex Washer Head 1/4 Fastener Galvanized
Siding screw is one of popular fastener screws , it is similar with roofing screw or self tapping screw with hex washer head or thread cutting screws , siding screw is designed for fastening wooden or plastic or chipboard objects that are widely used in furniture and building .
Generally , siding screw has a hex washer head and painted in different color like white , black , green . red and yelllow etc . self tapping threads with sharp point and a cutting through 3 or 5 threads on the point for quick cuting material and more steady fastening purpose . and a metal bounded EPDM washer is assembled to under head that can protect screw to be damaged by rain or sand and provide more good fastening .
Siding screws are made from harden carbon steel and stainless steel or alloy steel are available as well for more options of applications .
For the most applications ,siding screws are coated in zinc , nickel and painted head , for some strict request like resistance of corrosion , dacromet is a good choice .
Normally , screws can be passed 48 hours and max 96 hours for zinc plated during salty sprey testing .
Siding screws have to be operated under given torque when they are to be installed . different specifications different torques
|Hardness ( HV )||450||Yield Strength ( Mpa )||210||Elongation ( % )||35|
|Tensile Strength ( Mpa )||320||Torque||9||Reduction Area ( % )||45|
4 kgs each bag and 5 bags each carton for normal packing , and we provide custom packing for special requirements .
Tips for use
1 . Far from acid or alkalinity etc checmical conditions for longer service .
2 . Not available for heavy duty application .
3 . Do not put over torque on siding screws during operation .
Contact Person: MR.LIN