steel hex washer head self drilling screw

steel hex head self drilling screw 1.material:c1022 2.head:wafer 3.point:drilling

steel countersunk head self drilling screw 

Description: 1)best quality and best price. 2)Material: C1022 

Self-drilling screws are our main products.Self drilling screws can be made in different types.

Why we need self drilling screws?

1)Self drilling screw's tail was drilling or sharp, don't need auxiliary processing,can save much 

construction time.

2Compare with common screws,self drilling screws are higher in tenacity and maintain power.More secure

  and won't loose for a long time,self drilling screws can be used security.

3)Especially in construction, houses and other places, work, price, etc.,

   self drilling screws are the best economic fasteners.