1 Medium Split Lock Washer Zinc Yellow 1 1/8-7 and it has a square

and it has a square head for easy installation

5/16 Regular (medium) Split Lock Washer 18-8 Stainless Steel

and other items that require reliable support

These 3/4-10 x 6 Hex Tap Bolts are fully threaded and made of Grade 5 steel

and the zinc coating helps to protect the bolt from rust and other forms of corrosion

1 Medium Split Lock Washer Zinc Yellow 1 1/8-7 and it has a squareThis 1 Medium Split Lock Washer Zinc Yellow is a small, thin washer with a split in the middle. It is used to prevent nuts and bolts from loosening due to vibration or movement. The split in the washer allows it to conform to the shape of the nut and bolt, creating a tight fit that prevents loosening. This washer is made of zinc plated steel, which gives it a yellow color and provides corrosion resistance. It is commonly used in automotive,