This is a pack of two (2) hex flange head bolts for GM vehicles. These bolts have a flanged bottom that serves as a washer. These are for many different applications for many different GM vehicles. These are commonly used as engine and transmission mounting bolts. You will receive 2 bolts per order. (Contact us for a bulk pricing if you want to purchase a lot of these nuts)

M12 X 1.75 X 25

Thread Diameter: M12

Thread Pitch: 1.75mm

Flange Diameter: 25mm

Head Size: 18mm

Length: 25mm (overall)

Grade: 10.9

GM Part # 11516329

Alternate Part # 11515774

Item is number 10 in the GM diagram.