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Products > Metal Fasteners > Screw > Stainless Steel Hex Flange Self Drilling Screw
Product name : Stainless Steel Hex Flange Self Drilling Screw
Item : MTSCRHFDST
material : Stainless Steel
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  Details:
Standard: DIN7504 (Any kind of screw Driver, you can choose it from our following picture),  ISO 15480, GB/T 15856.4-2002
Material: SUS301,304,18/8,0Cr18Ni9,X5CrNi1810,X10Cr13,410S21,if you need to use other stainless steel, please let us know.
Heat Treatment: None for normal, If you have special hardness requirement, please let us know.
Surface Hardness:220HV is Normal, 750HV max after Quench with SUS410
Finish:None.
Head:Hex Flange
Tensile strength:700N/mm2
Thread Direction:Normal is right hand/dextrorotation, if you want left hand, please let us know.
Refer to document as below:
                 
Stainless Steel Hex Flange Self Drilling Screw.pdf
 
 Stainless Steel Hex Flange Self Drilling Screws belong to Self-Drilling Screws, also known as Tek screws, eradicate the need for a pre-drilled hole and allow drilling and tie to be done in the same motion. Self-drilling screws are used to create a hole and form their own mating thread in the process.
 
"Stainless Steel" - With the addition of 12% chromium to iron, stainless steel is formed. The chromium protects the iron against most corrosion or red colored rust; thus the term "stainless steel". The ability of stainless to form a thin layer of protection on its outside surface, called a "passive film", is its most important characteristic in preventing corrosion.
 
"18-8" - 300 series stainless steel having approximately (not exactly) 18% chromium and 8% nickel. The term "18-8" is used interchangeably to characterize fasteners made of 302,302HQ,303,304,384, XM7, and other variables of these grades with close chemical compositions. There is little overall difference in corrosion resistance among the 18-8 types, but slight differences in chemical composition do make certain grades more resistant than others against particular chemicals or atmospheres.
 
Austentic - Refers to 300 series stainless, the most popular of the stainless alloys accounting for 85%-90% of stainless fasteners sold Named for sir Robert Williams Austen, an English metallurgist, austentic stainless is a crystal structure formed by heating steel, chromium, and nickel to a high temperature where it forms the characteristics of 300 series stainless steel.
  One advantage the flange hex bolt has over a comparably-sized non-flanged bolt is its ability to displace the clamping force of the fastener over a greater range. On soft, aluminum automobile engine components, the use of a standard hex head bolt could potentially crack and damage the area surrounding the bolt head. With a flange hex bolt, the clamping force is displaced onto a greater area underneath the bolt head, thus saving the aluminum components. Valve covers, intake manifolds and water pumps are some of the aluminum components that often employ a flanged bolt head as a fastener. Other components of the automobile that benefit from the use of the flange hex bolt are the steering box, steering column and transmission
 
 You can refer to below chart/list of Screw head/Thread ending
 
Thread ending:

And below is the common drawing for this kind:

Below chart show some typical dimensions of them, you can refer it, or can you change it for your own design, if you want know more standard dimensions of screw , you can contact us.
 
Item Standard d1(mm) L(mm) d2 max.(mm) k max.(mm) S(mm)
4.2X13 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 13 8.8 4.1 7
4.2X16 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 16 8.8 4.1 7
4.2X19 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 19 8.8 4.1 7
4.2X22 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 22 8.8 4.1 7
4.2X25 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 25 8.8 4.1 7
4.2X32 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 32 8.8 4.1 7
4.2X35 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 35 8.8 4.1 7
4.2X38 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 38 8.8 4.1 7
4.2X45 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 45 8.8 4.1 7
4.2X50 DIN7504/ISO 15480/GB/T 15856.4 ST4.2 50 8.8 4.1 7
4.8X13 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 13 10.5 4.3 8
4.8X16 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 16 10.5 4.3 8
4.8X19 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 19 10.5 4.3 8
4.8X22 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 22 10.5 4.3 8
4.8X25 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 25 10.5 4.3 8
4.8X32 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 32 10.5 4.3 8
4.8X35 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 35 10.5 4.3 8
4.8X38 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 38 10.5 4.3 8
4.8X45 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 45 10.5 4.3 8
4.8X50 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 50 10.5 4.3 8
4.8X55 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 55 10.5 4.3 8
4.8X60 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 60 10.5 4.3 8
4.8X65 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 65 10.5 4.3 8
4.8X70 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 70 10.5 4.3 8
4.8X75 DIN7504/ISO 15480/GB/T 15856.4 ST4.8 75 10.5 4.3 8
5.5X16 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 16 11 5.4 8
5.5X19 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 19 11 5.4 8
5.5X22 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 22 11 5.4 8
5.5X25 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 25 11 5.4 8
5.5X32 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 32 11 5.4 8
5.5X35 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 35 11 5.4 8
5.5X38 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 38 11 5.4 8
5.5X45 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 45 11 5.4 8
5.5X50 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 50 11 5.4 8
5.5X55 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 55 11 5.4 8
5.5X60 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 60 11 5.4 8
5.5X65 DIN7504/ISO 15480/GB/T 15856.4 ST5.5 65 11 5.4 8


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