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Zinc plated CSK self drilling screws with ribs 3.9x25

  • 1-999 Boxes
  • >=1000 Boxes
Tapping Screws  Drilling screws
25mm 35mm 55mm 13mm 19mm
Thread size:
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Shipping fee:
Depends on the order quantity.
Lead Time:
15 day(s) after payment received
Customized packaging (Min. Order: 20 Boxes)
Samples: $2.00 /Box, 1 Box (Min. Order): Buy Samples
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Samples - $2.00 /Box, 1 Box (Min. Order): Buy Samples
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Quick Details
Stainless Steel, Steel, carbon steel C1022a
Measurement system:
INCH, Metric
Head Style:
Flat, Round
Place of Origin:
Tianjin, China
Brand Name:
LITUO self drilling screws
Model Number:
4.2*19mm --6.3*152mm
Surface treatment:
electro glavanized
Thread type:
coarse/fine thread
heat treatment, zinc plated,salt spray test
Systerm of measurement:
inch, metric
Head type:
csk head
CSK self drilling screws
Product Certification certification
CE Certified.
Valid from 2017-12-13 until 2022-12-12

Packaging & Delivery

Selling Units:
Single item
Single package size: 
10X12X15 cm
Single gross weight:
2.000 kg
Package Type:
self drilling screw :1000pcs/small box; 25boxes/carton; or 25kg bulked in one outer carton; with or without palllets; or by customer's request
Picture Example:
Lead Time :
Quantity(Boxes) 1 - 1 2 - 25 >25
Est. Time(days) 15 30 To be negotiated
Video Description




Csk head self drilling screws


materialcarbon steel c1022a
sizemin:4.2*19mm; max:6.3*152mm
finishelectro galvanized
washerwith EPDM bonden washer/black pvc washer/black rubber washer


csk head self drilling screws


Tianjin Lituo Imp&Exp Co., Ltd is the new star in fastener industry. Our popular products include: common wire nail, concrete nail, umbrella head roofing nail, duplex nail, coil common nail, aluminium blind rivets, and drywall screws, chipboard screws, self drilling screws, self tapping screws with hex head, pan head, etc.


We have clients all over the world, USA, Russia, Austrilia, Ukraine, UAE, South Africa, Brazil, Chile, Singapore, Malaysia etc, the list is endless.

 Welcome for your visit and inquiry soon !!


Csk Head self drilling screws specifications:


Item namehex head self drilling roofing screw  with EPDM washers
LengthMin.19mm(3/4''), Max.: 152mm(6'')
Materialcarbon steel C1022A
Surface treatmentelectro galvanized (white/yellow zinc plated)
Threadcoarse or fine thread
Headhexagen flange head
Key wordhigh quality hex head self drilling screw
Packagehex head self drilling screw packed in 500/1000 pcs/box then in ctn. or bulked in 25 kg ctn; or as per customer's request


Detailed sizes of csk head self drilling screws:



Photos of csk head self drilling screws:


**Screws with six nibs under screw head  



csk head self drilling screw fine thread with wings :




 zinc plated csk hylex head self drilling screws coarse thread  









Workshop of csk head self drilling screw:


our output of the csk head self drilling screw is over 400tons per month.


* Equipment quantity of hex head self drilling roofing screw

Thread making machine17setsmade in Taiwan
Head making machine25setsmade in Taiwan
Drilling making machine5 setsmade in Taiwan
Drilling cutting machine5 setsmade in Taiwan


Equipment for heat treatment of csk head self drilling screw:



Package of csk head self drilling screw:



we could print your LOGO and  make the designed packing as per your request.


 Transport details for csk head self drilling screw:



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 If you have any needs, you can contact with me by the following information: