5/8-11 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Oxide 5/16-18 057-09 The 1/4-20 thread size ensures

The 1/4-20 thread size ensures a tight fit

These 3/4-10 x 1 1/4 Hex Head Flange Non Serrated Frame Bolts IFI-111 2002 Grade 8 Black Phosphate are designed for heavy-duty applications where strength and reliability are paramount

it features a fully threaded shank for maximum holding power

and other industrial settings where a reliable and long-lasting fastener is required

It is made from durable steel and has a zinc yellow finish that provides excellent corrosion resistance

5/8-11 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Oxide 5/16-18 057-09 The 1/4-20 thread size ensuresThese 5 8 11 Serrated Flange Hex Lock Nuts are made of HR15N case hardened steel and have a black oxide finish. They are designed to provide a secure and vibration resistant connection in a variety of applications. The serrated flange helps to prevent the nut from loosening, even under extreme vibration or shock loads. These nuts are also heat treated to provide increased strength and durability. They meet the requirements of ASTM A563 Grade C and are