Standard Hex Washer Head Bi Metal Screws Self Drill Fastener DIN 7504 Screws

Standard Hex Washer Head Bi Metal Screws Self Drill Fastener DIN 7504 Screws

Bi-metal Self Drilling Screws with hexagon washer head combined with a EPDM bonded washer ,full tapping threads with drilling point that can cut and drill fast into metal sheet in a power drill .

Bi-metal self drilling tapping screws are made in two different materials for combination of durable corrosion and strong hardness . Normally , Bi-metal self-drilling tapping screws are made of stainless steel but drilling point is made from carbon steel so that screws can be capable of drilling metal sheets smoothly and work for a long time .

Typical Features

1 Strong hardness

2 Perfect durable corrosion

3 Recyclable

4 Fast drilling rate

Specification

DIN7504

Note :

1 , We offer non-standard sizes as well .

2 , Bonded EPDM washer is optional .

Bi-metal self-drilling tapping screws must to be plated a film protective finish to prevent screws from rusting and extend service time . we supply different finish for different applications , you can make a right choice according to the characteristic each kind .

1 , Zinc

This is popular finish and various colors for choice . The resistance of rust is good and eco-friendly .

2 , Nickel

Nickel finish makes the surface of the screws will more bright and hardened and the performance of screws will be improved .

3 , Polishing

Bi-metal self-drilling tapping screws can be polished after forming for getting a bright surface and anti-rust purpose , but it is not good as other finishes on anti-rust . polish is usually for stainless steel screws.

4 , Tin

It is very perfect to be anti-rust , and widely used to components .

5 , Brass

It is available for stainless steel screws and carbon steel screws and perfect on durable corrosion .

6 , Dacromet

This finish is used for screws with big sizes and can stop screws to be rusted long time even under bad surroundings .

More options for bi-metal self-drilling tapping screws

Stainless steel : SUS 201 , SUS303 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 .

Carbon steel : 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO

Bi-metal self drilling tapping screws are used to drill sheet metal should be considered the thickness of sheet and make sure enough torque to finish secure .

Torque Strength

Unit:Kgf

Shearing Strength

Unit:Kgf

Tensile Strength

Unit:Kgf

Applications

Bi-metal self drilling tapping screw is used for lock metal sheet that service in building ,bridge ,furniture and barrier etc .

Competitive Advantage

※ Top quality with cheap price

※ Strict dimensions control and high precision

※ All Screws are eco-friendly

※ Quick delivery

※ Perfect sales-after service

Features

• Fast drilling performance
• Easy installation
• Solid stability pieces are made from good material
• Eco-friendly from material to finish are RoHS meet

With many years reputation in hardware filed , VEDALI HARDWARE CO., LTD has entered hardware filed and gained much development in these years , we have over 100 employees and 20 engineers on researching and development , and several branches that are specialized in different hardware for vast demands .

Our product range covers Fasteners ( Screws , Bolts , Nuts , Rivets , Washers , Pins ) , Stamping Parts , Machined Parts , Plastic Injection Molded Parts Which are made of or from different materials for every field in industry , Agriculture and Service . We own advanced process machines and experienced skilled workers to ensure products are manufactured in high quality . We are able to proceed special designs for new projects and provide good solutions to difficult problems during operations , and OEM services are available for us as well .

We carry out ISO management system for our normal managements and put more good management styles based on hommization , efficiency , technicalization according to our actual situations . Our products are sold to the most countries or areas in the world and serve many fields , welcome you to send enquiries to us and looking forward to cooperation .