1 1/4-12 NE Nylon Insert Hex Lock Nut Zinc 5/16-18-3 The 5/8-11 x 4 Hex

The 5/8-11 x 4 Hex Cap Screw Grade 8 Yellow Zinc is a high-strength fastener designed for demanding applications

8 grade rating indicates its high tensile strength and resistance to deformation under load

It has a hex head that allows for easy tightening and removal with a wrench

Whether you're hanging fixtures

it features a 5/8-11 thread size and measures 1 inch across flats

1 1/4-12 NE Nylon Insert Hex Lock Nut Zinc 5/16-18-3 The 5/8-11 x 4 Hex1 1 4 12 NE Nylon Insert Hex Lock Nut Zinc is a type of nut that is used to secure bolts and screws in place. It is made of zinc plated steel and has a nylon insert that helps to prevent the nut from loosening. This nut is commonly used in automotive and industrial applications. It is also known as a prevailing torque locknut or a self locking nut.