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|Material:||Stainless Steel 304||Hardness:||HRC 65|
Stainless Steel Self Drilling Screws Hex Washer Head Metal Screw Tapping No. 14
With good stainless steel material and perfect working performances , stainless steel self drilling screws are used to various metal sheets and metal proofs in building .
Stainless steel self drilling screws with hexagon head that are driven by a hex socket pipe or spanner for easy operation ; Normally , self drilling screws with teck points which are completely different from other screw’s points , this kind point with fast drilling performance and improve efficiency much .
Self drilling screws with tapping threads based on standard DIN7504 K
|Hex cross width||s||9.5|
|Pitch||P||11 per inch|
● Good ductility
● High tensile strength
● No magnet
● Corrosion resistant
● Fine roughness
Stainless steel self drilling screws are used for securing metal sheets , the thickness of metal sheets should be suitable for related specification of screw .
|Min. case Hardness||600|
|Core Hardness Hv 0.3||300~400|
|Min. Torsional Lb-in||61|
|Drill point Point #||Nr. 3|
|Test Plate Thickness||0.062~0.068|
|Tensile strength σb (MPa)||650|
|Yield Strength σs (MPa)||320|
|Elongation δ5 (%)||35|
|Reduction of area ψ (%)||45|
Stainless steel self drilling screws are polished surface with good brightness
|Surface request||No burrs and bright|
1 , Choose a special electric driller for self drilling screws
2 , Adjust locator in electric driller to a proper posiztion for leading screws are to be driven to right position
3 , Check drilling rate of driller
|Screw size||Drilling rate RPM|
|3.5 ( 6 # )||1500 - 2500|
|3.9 ( 7 # )||1500 – 2500|
|4.2 ( 8 # )||1500 - 2500|
|4.8 ( 10 # )||1500 - 2500|
|5.5 ( 12 # )||1000 – 1800|
|6.3 ( 14 # )||1000 - 1800|
4 , Choose attached screwdriver bit and drive screws into metal sheets .
If you take a single electric driller operated by hand , please note
① Don’t put more joint on locating device in electric driller
② Make sure the sheet thickness is suitable for the length of screw , or screws will be broken easily .
③ Don’t put more RMP that overs max RMP of electric driller , or the point of screws will be melt down .
④ Don’t choose conflicting model for screws .
Stainless steel self drilling screws are normally used to metal sheets
▲ Metal sheets on roof
▲ Metal wall sheet
▲ Highway equipments
▲ Wide versatility
▲ Top material
▲ Quick installation
▲ Convenient operation
▲ Simple deign
▲ Standard Sizes
Tips for installations
|★ A screw gun with a depth sensitive nose piece that be used to install drillers ,the screwgun should be a min of 4 amps and a RPM range from 0 to 2500c|
|★ Adjust the screw gun nose piece to properly set the fastener|
|★ Damaged bit tips should be replaced|
|★ The fastener is fully setted when the head is flush with the work surface|
|★ The fastener have to penetrate beyond the metal structure a min of 3 picthes of threads|
|★ Put 13 kgs or so force on screw gun and keep force direction is same as the centr of drilling point|