Square Head Bolt, 18-8 Stainless Steel, 1/4-20 Thread Size, 3/4 Lg, 50 PK

Insert bits are short driver bits that are most commonly placed in an extension adapter..

A screw for mounting switch plates on to a wall..

.Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.

A hex cap screw has a hexagonal head, designed to be driven by a wrench..

7/16"-14 x 2-1/2" Zinc Plated Grade 2 / A307 Steel Coarse Thread Carriage Bolts 50PK The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.

Machine screws are used in fastening nearly all types of hard materials.

Square bolts are typically mated with square-headed nuts.Square Head Bolt, 18-8 Stainless Steel, 1/4"-20 Thread Size, 3/4" Lg, 50 PK Compared to standard hex bolts, square bolts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening)..

A lock nut is a nut that resists loosening under vibrations and torque..

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A lock nut is a nut that resists loosening under vibrations and torque.