M16-2.00 DIN 985 Metric Class 8 Nylon Insert Hex Locknut Zinc 20NCUP188 The washer is

The washer is

The 3/4 External Tooth Lock Washer is a reliable and effective solution for preventing unwanted loosening of fasteners

a 5/16" width across flats

This 9/16-18 x 3 1/2 Hex Cap Screw is made of steel and has a Grade 8 rating

M16-2.00 DIN 985 Metric Class 8 Nylon Insert Hex Locknut Zinc 20NCUP188 The washer isThe M16 2. 00 DIN 985 Metric Class 8 Nylon Insert Hex Locknut Zinc is a high quality locknut designed to provide a secure and reliable connection in various applications. Made from durable steel and coated with a zinc finish for corrosion resistance, this locknut features a nylon insert that creates a positive lock between the nut and bolt, preventing loosening due to vibration or movement. Its Class 8 strength rating ensures exceptional holding