About Hex Nuts:
Commonly used with bolt to fasten two or more parts together. The two parts are combined by their threads' friction, a slight stretching of the bolt and compression of the parts to be held together. In common use, a nut-and bolt joint holds together because the bolt is under a constant tensile stress called the preload.

Product Specification:
Product Name: Hex Nuts
Material: High-quality 100% 304 stainless steel
Dimension: 5/16"-18
Package Content: 55 x Hex Nuts

Notes：
1:Please check its size before ordering.
2:This product contains small parts, please keep away from babies, children and pets.