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Add: A2501,Oriental Times Plaza, North Huaqiang Rd, Futian District,Shenzhen,China
Product name : Stainless Steel Flat Washer
Item : MTWSHFLWST
material : Stainless Steel
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Standard: DIN125/DIN126, GB/T97.2-1985/GB/T97.2-1985, ISO7089/ISO7090
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.
Stainless Steel Flat Washer intended for the general use under the head of a bolt or nut in order to provide a smooth bearing surface and distribute the fastener load over a wider surface area. Available in many sizes, specifications, grades, and finishes.
"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.
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.
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