1/4-20 x 2 1/2 Unslot HWH Self Drill Machine Full Thd #4Point Zinc 1000 hours Salt Spray D127B188B and it is also self-locking

and it is also self-locking

This 1/4-20 x 1 Slotted Pan Machine Screw is made of durable nylon and is fully threaded

preventing damage to the surface of the material being fastened

Designed to prevent nuts and bolts from loosening due to vibration or movement

1/4-20 x 2 1/2 Unslot HWH Self Drill Machine Full Thd #4Point Zinc 1000 hours Salt Spray D127B188B and it is also self-lockingThese 1 4 20 x 2 1 2 inch Unslot HWH Self Drill Machine Full Threaded #4 Point Zinc screws are designed for use in a variety of applications. They are made of steel and have a zinc plating for corrosion resistance. The self drilling point makes it easy to drive the screws into metal without the need for a pilot hole. The HWH (hex washer head) design provides a wide bearing surface and helps to prevent the screw from stripping. These screws are also