1 hardware tools 2 widely use 3 can meet DIN JIS GB ASTM BS standard 4 do OEM 5 low price and high quality Specifications hardware screw

Head : Hex washer head with sharp point Thread : Coarse thread Size : #8x1.5" Material : Harden steel Point : Type A

Hexagon washer head self tapping screw , a plastic ring under head that provides more frictions to stop screw moving after screw was screwed into objects , case hardend material ensures screws can meet working requirements , coarse and shap threads as well as sharp point design .

This screw is plated in yellow zinc for the surface  which can improve performance on anti-rust , the screw will not be rusted within 10 years in the dry circumstance .

1. Material : ANSI 1018-1022 metal

2. Finish :  zinc yellow .

3. Salty Sprey : 72 hours in 96% brine under normal temperature .

4. Hardness : HRC450

5. Specification : ST3.9X25

  

Using Indication

Inner Hex Sleeve Spanner is needed during screwing screws into workpieces , make sure do not drop out plastic ring , which support more tightness between screw and workpiece . there is a pre-hole that is about 1/2 point legth of screw before drilling screws .