A Lock washer exerts a spring force between the fasteners head and the substrate which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread creating more friction and resistance to rotation. 50... more
Durable steel construction offers long-wearing holding power. Designed with no sharp edges to protect hands and documents. | Universal® Compressors for File & PaperFastener Prong Bases, 100/Box Metal in Black | 1.06 H x 3.23 W x 5.43 D in | Wayfair more
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