hex flange self drilling screw from China 

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♦Product detail 

1. material : carbon steel 1022

2. grade : A

3. head type : hexgon head 

4. thread : full/partial thread 

5. end : #3 #4 drill end 

6. drill ability : 4~10mm 

7. washer : available . black/grey/white PVC and EPDM washer 

8. main size : 

4.8*20mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm 65mm 70mm 75mm

5.5*19mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm 65mm 68mm 75mm 90mm 115mm 

6.3*19mm 25mm 32mm 38mm 50mm 63m 75mm 100mm 125mm 

9.application :

 to fix steel stucture , heavy steel keel , thick metal board ,roofing ,colored board ,

 and the washer can  effeciently protect the attacher materials from tne rain .

10. packing :

1>500/1000pcs per small color/white box,20/16 boxes per carton .

2>loose packing is 20/25kg in one carton/bag .wood pallet is available .

3>OEM brand is accepted ,or as buyer's request .

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♦Test report 

♦Our company 

Huhao Metal Products Group Ltd , 

1 .Establish in 1998 ,located in Tianjin city , is a manufacturing enterprise ,

2 .Professional to do various kinds of screws and nails for more than 16 years .and been

Alibaba golden supplier for 7 years . 

3 .Products are mainly exported to Europe, North America, South America, Africa, Asia, etc, and

has a good relationship with many country customers .

4 .integrity, quality, respect for customer demand as the starting point, and receives  the new and

 old customers' recognition and support.

If you are interested in our products ,please talk with me .