DOUBLE THREAD / Landwide Screw is not only a screw factory but also a consultant, service provider assisting partners all over the world to find suitable solution in their fastener business over 25 years

Screws, nuts and bolts made with special coating, ISO processes. Self-drilling and self-tapping screws 100% made in Taiwan. Screws plating and coating with zinc, nickel, chrome. Great range of self drilling screw , self tapping screw , concrete screw, roofing screw , flange washer head screw, stainless steel screw.

sales@landwide.com.tw

Top choice of screw

DOUBLE THREAD - Roofing screw
  • DOUBLE THREAD - Roofing screw
DOUBLE THREAD
C02

Roofing Screw

LANDWIDE SCREW DNA

Double thread screw manufactured by Landwide are suitable for exterior roofing environment. Provide surface coating per customer request for surface corrosion protection.

Different type of thread and point length available per customer environment requirement. From light work to heavy work, you could find solution by consulting Landwide sales team.

And thread to point unique design provides quick and easy installation in the substrate without pre-drilling.

Coating
  • Mechanical Zinc, Zinc Plated Cr+6 , Zinc Plated Cr+3, Zinc Yellow Cr+3, Zinc Yellow Cr+6, Grey Phosphated, Black Phosphated, Ruspert 500HRS, Ruspert 1000HRS, Ruspert 1500HRS, Class 3, Class 4, Other Special Coating
Point Selection
POINT SELECTION
DRILL POINT#

DRILLING CAPACITY

#3

5 MM(2+3)

#4

8MM

#5

12MM

#6

>12MM

Specifications
SPECIFICATION
DIAMETERTHREAD TYPELENGTHPOINT
M5.5 / M5.5B / C50MM – 300MM#3 - #6
M6.3 / M5.5B / B50MM – 300MM#3 - #6
M6.5 / M5.5A / B50MM – 300MM#3 - #6
M6.5 / M5.5A / C50MM – 300MM#3 - #6
#12 / #12B / C2" – 11"#3 - #6
#14 / #12B / B2" – 11"#3 - #6
#16 / #12A / B2" – 11"#3 - #6
#16 / #12A / C2" – 11"#3 - #6
Gallery
Related Products
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Frequently Asked Questions
What are your ranges of manufacture sizes of screws?

Dia: 3.0mm-16.0mm (Min.-Max.) Length:5.0mm-300.0mm (Min.-Max.)

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DOUBLE THREAD | Over 25 Years Screws, nuts and bolts Manufacturer | Landwide

Located in Taiwan R.O.C., Landwide Co., Ltd., since 1992, is a DOUBLE THREAD | screw manufacturer. Specialized in metal screws plating and coating with zinc, nickel, chrome, Landwide supplies self-tapping & self-drilling screws with flexibility.

ISO manufacturing, great range of tek screws, materials & grades, high strength, custom design, special coating, packaging and value-added services, Landwide's screw production includes self tapping screws, self drilling screws, roofing screws, concrete screws, metal roofing screws, tek screws, washer head screws, double threaded screws, etc.

Landwide has been offering worldwide customers high-quality custom fastener manufacturing, both with advanced technology and 27 years of experience, Landwide ensures meet each customer's demands are met.