Ss 4mm Self Tapping Screws That Go Into Metal , Self Threading Machine Screws

Hexagon Wafer / Flange Head Self - Tapping Screw ,Type 17 point , Mechanical Galvanised ,Roofing Tek Screw

A self-tapping machine screw, differs in that the lower portion of the shank is designed to carve threads as the screw is driven into an untapped hole. This feature gives the self-tapping screw the advantage over a self-drilling screw as new threads are not cut should the screw be re-installed. Self-tapping screws are available in many different drive styles, head styles, and types, each offering its own benefits. 

• Roofing Screws For Sheet to Timber.
• Self-drilling TEK type screw fixings with a 5/16th hexagonal head for attaching sheets to timber purling.
• Head: Hexagon
• Type17 Point enables improved and speedy insertion.
• Finish: Class 4 Mechanical Galvanized coating for superior anti-corrosion
• Designed for fixing cladding and sheet metal to timber frame work.

Question & Answer 

1. Payment : T/T (30% T/T in advance and balance 70% against copy of B/L)

                       L/C at sight 

2. Lead Time : If have stock , can be packing and ship within 10-15 days ,        

                        If not have stock , usually take 25-30 days to produce one container order .

3. Free Sample : For standard item , we can supply the samples free .  courier cost by the buyer.

                            For nonstandard item , we will quote the mould charge ineed,  but the mould charge can be return if bulk          order released .

4. OEM  : We  Can produce the drawing according to your drawing or samples , also can packing the products as customer's     request with LOGO  and company information on it 

5. How to place a order :

    Send inquiry -------quotation --------Confirm order (price ,lead time , technical detail with drawing and payment ) ---------pay    deposit -------Start to produce after got deposit ---------sample approve (if need) ------------ass produce -----send picture of packing for confirm------arrange shippment ---------send copy of B/L -------------Pay balance payment ----------send the documents for clearance ----------feedback 

6. Anyother question , welcome to contact us anytime .