Ruspert Coating Stainless Steel + Carbon Steel Bi-Metal Self Drilling Screws

Price $1.99 Compare
Min Order 100 Pieces
Shipping From Hebei, China
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Shenzhen Dahe Industrial Co., Ltd.

VIP   Audited Supplier 1 year
Profile Certified by SGS/BV
Self Drilling Screw
Stainless Steel + Carbon Steel
Hexagon
Ruspert Coating
ISO, GS, CE, FM
Customized
304+435
Base on Client Require
Available
60 Days
Pan/Truss/ C.S.K./Wafer/Hex
Bsd Thread/ Double Thread
DAHE
Box+ Carton + Pallet
ST4.8-ST7.1(#10-#15)
China
731814
Product Description
Product Description

Hex Washer Head Bi-Metal Self-Drilling Screws

Product Overview

Hex Washer Head Bi-Metal Self-Drilling Screws are high-performance fasteners that combine stainless steel and carbon steel through a welding process. This unique construction offers the corrosion resistance of stainless steel while retaining the drilling power of carbon steel, making them ideal for high-end construction projects that demand both durability and efficiency.

Product Advantages

  • Superior Corrosion Resistance
    The head and shank are made from 300-series stainless steel, ensuring excellent rust and corrosion resistance, even in harsh environments.

  • High Drilling Efficiency
    The drill tip is made from hardened carbon steel, enabling fast and precise drilling through metal surfaces without requiring pre-drilling, which improves installation speed.

  • Multiple Coating Options
    To enhance durability and longevity, the screws are available in two surface treatment options:

    • Zinc Plating - Provides standard corrosion resistance.
    • Ruspert Coating - Offers superior anti-corrosion protection for extreme environments.

Internal Performance

  • High Strength and Ductility
    The bi-metal construction offers both strength and flexibility, ensuring reliable fastening and reducing the risk of brittle failure under high stress.

  • Hydrogen Embrittlement Resistance
    The 300-series stainless steel composition makes the screw resistant to hydrogen embrittlement, increasing its reliability in demanding applications.

 

Hex Washer Head Bi-Metal Self-Drilling Screws offer a perfect balance of corrosion resistance and drilling strength, making them an essential fastening solution for high-end construction projects. Their bi-metal design, multiple coating options, and high durability ensure long-term performance and reliability in challenging environments.

 
Classification Requirements of Corrosion Resistance
Class 1 General use in indoor application. AS2331.3.1 SST:72H
Class 2General use in outdoor applications with low levels of pollution. AS2331.3.1
SST:240H.DIN50018 KESTERNICH test: 5 Cycles
Class 3Outdoor use in mild industrial or marine environment.AS2331.3.1 SST:1000H. DIN50018 Kesternich test: 15 Cycles
Class 4Outdoor use in severe marine environment. AS2331.3.1 SST: 1500H. DIN50018 Kesternich test: 25 Cycles
Class 5 Outdoor use in highly severe marine environment. The use of SUS 304/316 Bi-metal screws are highly recommended
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