This is a pack of four (4) 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. You will receive 4 bolts per order. (Contact us for a bulk pricing if you want to purchase a lot of these nuts)

M12 X 1.75 X 30

Thread Diameter: M12

Thread Pitch: 1.75mm

Flange Diameter: 26mm

Head Size: 18mm

Length: 30mm (overall)

Grade: 10.9

GM Part # 11515775

Alternate Part #'s 11515808 ; 22574522

Item is number 23 in the GM diagram.