Hex Washer Head Double Thread Knurled  Self-Drilling Screw

Hex Washer Head Double Thread Knurled Self-Drilling Screw

Model: 1022A
Material: Carbon Steel (1022A)
Dimensions:

Shank/Thread: 6.3/5.5-14
Length Range: 25–300mm (Standard: 25/32/38/45/50/65/75/100/125/150/165/175/200/300)
Key Features:

​Corrosion Protection: Zinc-plated, Salt Spray Resistance 500H/1000H/1500H (Class 3 & 4 per ISO 9227)
​High Strength: Tensile 380-440 MPa | Yield 620-720 MPa
​Knurled Drill Tail: Enhanced grip and anti-slip performance for metal substrates.

Applications:
Heavy-duty construction, metal roofing, and industrial frameworks requiring vibration-resistant fastening.

Standards: ASTM F568M, DIN 7500.
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