M12-1.75 x 40 DIN 6921 8.8 Metric Flange Bolt Screw Non Serrated Plain 9/16-12 while the 2 3/4" refers

while the 2 3/4" refers to its length

The 1/2-13 x 6 1/2 Hex Cap Screw Grade 2 Zinc is a high-quality fastener designed for a variety of applications

This 1 1/4-7 x 5 1/2 Hex Cap Screw is made of steel and has a Grade 5 zinc plating

This 5/8-11 x 1 1/2 Hex Cap Screw is made of 316 stainless steel

These 3/4-10 x 5 Carriage Bolts are made of Grade 8 steel and are fully threaded with a plain finish

M12-1.75 x 40 DIN 6921 8.8 Metric Flange Bolt Screw Non Serrated Plain 9/16-12 while the 2 3/4" refersThe M12 1. 75 x 40 DIN 6921 8. 8 Metric Flange Bolt Screw Non Serrated Plain is a high tensile steel bolt designed for use in a variety of industrial and construction applications. It features a hexagonal head for easy installation and removal, and a flange that provides a large bearing surface to distribute the load evenly. The bolt is made from 8. 8 grade steel, which has a tensile strength of 800 MPa and a yield strength of 640 MPa. It is also zinc