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M4 Carbon Steel Flat Washer, Black Oxidized Alloy Steel, 4.8 Grade Metal Flat Washer, 4mm ID, 9mm OD, 0.8mm Thickness, 500Pcs
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M4 Carbon Steel Flat Washer, Black Oxidized Alloy Features
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Made of widely used carbon spring steel with higher strength, hardness, elasticity and hardenability.
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Size: 4mm/ 0.15" inner diameter, 9mm/ 0.35" outer diameter, 0.8mm/ 0.03" thickness.
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Flat washers evenly distribute pressure not only on the nut but also on the head of the fastener.
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The washer prevents damage to the material and reduces the possibility that the nut will come loose from uneven surfaces.
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Package Included: 500Pcs M4 Steel Flat Washers.
About M4 Carbon Steel Flat Washer, Black Oxidized Alloy
Specification: M4 x 9 x 0.8mm Steel Flat Washers Inner Diameter: 4mm/ 0.15" ; Outer Diameter: 9mm/ 0.35" ; Thickness: 0.5mm/ 0.03" Surface Treatment: Blackening Material: It is a carbon spring steel with a wide range of uses. Compared with 65 steel, it has higher strength, hardness, elasticity and hardenability. This steel is generally used after quenching and tempering at medium temperature. Material Chemical Composition (%): Carbon: 0.62-0.70, silicon: 0.17-0.37, manganese: 0.90-1.20, phosphorus ≤ 0.035, sulfur ≤ 0.035, nickel ≤ 0.25, chromium ≤ 0.25, copper ≤ 0.25 Package Includes: 500 Pcs of M4 Steel Flat Washers
