10-12 x 2 Slot Hex Washer Self Piercing 5/16 Across Flats Full Thread Zinc Needle Point 5/16-18-3B The nut is designed to

The nut is designed to be used with 4-40 machine screws and is commonly used in a variety of applications

Its compact size and precise dimensions make it ideal for a wide range of fastening applications

providing a secure grip for tightening with a hex key or driver

including attaching metal roofing and siding

with the threads extending from the head to about halfway down the length of the bolt

10-12 x 2 Slot Hex Washer Self Piercing 5/16 Across Flats Full Thread Zinc Needle Point 5/16-18-3B The nut is designed toThese 10 12 x 2 Slot Hex Washer Self Piercing 5 16 Across Flats Full Thread Zinc Needle Point screws are designed for use in a variety of applications. They are made of durable zinc plated steel and feature a hex washer head with a 5 16" across flats. The self piercing needle point allows for easy installation into sheet metal without the need for pre drilling. These screws are perfect for use in electrical, plumbing, and HVAC applications.