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High-strength flat washer made from AISI 4340 alloy steel with a corrosion-resistant black oxide finish. Features 51mm inner diameter, 75mm outer diameter, and 3mm thickness—perfect for heavy-duty mechanical and structural applications. 

<h3 class="md-block-header-three"><strong class="md-inline-bold">Flat Washer | AISI 4340 | ID 51mm | OD 75mm | THK 3mm | Black Oxide</strong></h3><p class="md-block-unstyled">High-strength flat washer made from AISI 4340 alloy steel with a corrosion-resistant black oxide finish. Features 51mm inner diameter, 75mm outer diameter, and 3mm thickness—perfect for heavy-duty mechanical and structural applications. </p>

<h3><strong>Flat Washer | AISI 4340 | ID 51mm | OD 75mm | THK 3mm | Black Oxide</strong></h3>
<p>High-strength flat washer made from AISI 4340 alloy steel with a corrosion-resistant black oxide finish. Features 51mm inner diameter, 75mm outer diameter, and 3mm thickness—perfect for heavy-duty mechanical and structural applications.&nbsp;</p>


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Flat Washer | Aisi 4340 | Id 51mm | Od 75mm | Thk 3mm | Black Oxide

flat washer aisi 4340 id 51mm od 75mm thk 3mm black oxide ring pipih diameter tebal oksida hitam washers oem pencuci rata oem/oem代工 平垫圈 内径 51 毫米 外径 75 厚度 黑色氧化物 oem代工 obtfju