1/4-14 x 1 1/2 Unslotted Indented Hex Washer Full Thread Self Drilling Screw Black Oxide NKC meaning they do not have

meaning they do not have a coating

The screw is designed to be used in metal or plastic and is ideal for applications where a strong hold is required

They are designed for heavy-duty structural applications and meet ASTM A325 specifications

This 1/2-13 x 3 Hex Cap Screw Grade 2 Non A307 Black Oxide and Oil is a high-quality fastener designed for secure and durable connections

The screw is 1 inch long and has a diameter of 5/16 inch

1/4-14 x 1 1/2 Unslotted Indented Hex Washer Full Thread Self Drilling Screw Black Oxide NKC meaning they do not haveThe 1 4 14 x 1 1 2 Unslotted Indented Hex Washer Full Thread Self Drilling Screw Black Oxide is a versatile and durable fastener designed for a wide range of applications. Its self drilling tip eliminates the need for pre drilling, making installation quick and easy. The indented hex washer head provides a secure hold and prevents the screw from slipping. The full thread design ensures maximum holding power, while the black oxide finish provides