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HANDAN HAOSHENG FASTENER CO., LTD.
Nylon Head Self-Drilling Screws

Our Nylon Head Self-Drilling Screws combine a self-drilling tip with an integrated nylon washer, providing all-in-one drilling, tapping, and waterproof sealing. Ideal for metal roofing, wall cladding, and steel structure applications.

  • Description

Product Details


Name

Self-drilling Screw

Materials

Carbon Steel(1022A)

Standard

DIN7504

Head Type

Hex Head

Point Type

Self-drilling (#2, #3, #4, #5)

Strength level

High-strength 

Size

#6 – #14 (3.5mm – 6.3mm)

Surface finish

 ZP/YZP/Dacromet etc.

Length

13-150mm

Samples

Available


Product Parameters


Thread SizeST2.9ST3.5(ST3.9)ST4.2ST4.8(ST5.5)ST6.3
PPitch1.11.31.31.41.61.81.8
amax1.11.31.31.41.61.81.8
cmin0.40.60.60.80.911
dcmax6.38.38.38.810.51113.5
min5.87.67.68.19.81012.2
emin4.285.965.967.598.718.7110.95
kmax2.83.43.44.14.35.45.9
min2.5333.63.84.85.3
kwmin1.31.51.51.82.22.73.1
rmax0.40.50.50.60.70.80.9
smax45.55.578810
min3.825.325.326.787.787.789.78
dp2.32.83.13.64.14.85.8
Drilling range(thickness)0.7~1.90.7~2.250.7~2.41.75~31.75~4.41.75~5.252~6


Key Features & Benefits


One-Step Installation: Self-drilling tip eliminates pre-drilling – drills, taps, and fastens in one operation

Waterproof Seal: Bonded nylon washer compresses to prevent water infiltration – perfect for exterior use

Corrosion Resistant: Zinc plated, galvanized, or Dacromet coated for outdoor durability

High Holding Power: Deep threads provide excellent grip in steel substrates

Surface Protection: Nylon head prevents scratching painted metal surfaces


Intended Applications


Metal Roofing: Attaching corrugated steel or aluminum sheets to purlins and structural framing

Wall Cladding: Securing metal wall panels, sandwich panels, and insulated panels

Steel Structures: Fastening flashing, gutters, and trim to steel building frames

HVAC Ductwork: Assembling sheet metal ducting systems

Insulation: Securing insulation boards and vapor barriers

Garages & Sheds: Assembling pre-engineered metal buildings and storage units


Installation Tips


Use variable speed drill at 1500-2500 RPM

Drive perpendicular to surface

Stop when washer compresses slightly – do not over-tighten

Match drill point to material thickness


Why Choose Our Nylon Head Self-Drilling Screws?


Weather-Proof Design: The bonded nylon washer provides reliable water sealing for exterior applications

Standards Compliant: Manufactured to DIN 7504 or ISO 15480 specifications

Comprehensive Range: All standard sizes, drill points, and colors in stock

Corrosion Protection: Multiple finish options for various environmental exposures

Bulk Packaging: Available in boxes or contractor quantities (250, 500, 1000, 5000 pcs)

Custom Colors: Head color matching available for specific project requirements


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