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Spring Nuts　　SPN｜CSTW｜CRTW｜USN｜PSN｜JSN｜FSN｜ALN｜CAM
崧筌扣環 台灣最大專業扣環製造廠

SPN

Part name：external push-on spring nut (circle)
Material：carbon steel、stainless steel
Hardness：HRC40~50
Finish：black oxide
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