The highest performing all stainless steel self drilling screw

What is Hardtec Stainless Steel?

Hardtec is a registered brand name of an alloy known as KDS2000 made by Daido Steel (from Nippon Steel). It's a proprietary stainless grade that has been developed to combine the high corrosion resistance of Austenitic grades like 304 and has the hardness of heat treated Martensitic grades like 410 stainless steel.

Hardtec has a chemistry very similar to 410 stainless steel; but also has 1% of Molybdenum added to it. Molybdenum is the element that gives grade 316 its corrosion resistance improvement over grade 304. Hardtec stainless offers high levels of corrosion resistance, the decline of which was previously unavoidable with heat-treated grades like 410.

Advantages

• Higher corrosion resistance than 304 stainless steel
• Almost twice as strong as 304 or 316 stainless steel
• 100% fully stainless steel

Hardtec Corrosion Resistance Test

Hardtec Corrosion Resistance Test

Hardtec Pull Out Data

6.8kN (average characteristic pull out)

15kN (average characteristic shear load)

Screws tested in 34.4MPa concrete with 30mm embedment depth

What about other stainless steel self-drilling screws?

There are other stainless steel self-drilling screw options on the market but they each have the following factors to consider:

Learn more about Pitting Resistance Equivalence Number (PREN) and find out why higher PREN values indicate greater corrosion resistance.

How well do Hardtec Stainless Steel screws perform?

Hardtec is stronger than both 304, 305 grade and 410 grade stainless.

Strength tests show that Hardtec screws have:

• 18% more torsional strength than 410 self-drilling screws
• 231% more torsional strength than 305 self-drilling screws
• 18% more tensile strength than 410 self-drilling screws
• 85% more tensile strength than 305 self-drilling screws
• 26% more shear strength than 410 self-drilling screws
• 80% more shear strength than 305 self-drilling screws

Click the images below to see our full range of Hardtec Stainless Steel Screws.

Hardtec HWF Self Driller	Hardtec CSK Self Driller

It is the customer’s responsibility to ensure that an appropriate safety factor has been applied to any pull-out or strength data to calculate the appropriate Safe Working Load Limit.  We suggest that you engage a consulting engineer to assist you. Anzor takes no responsibility for the final decision, and accepts no liability in the case where loss arises from the standard safety factor chosen.