Function: Multipurpose body bolts and U nuts kit is suitable for mounting vehicle body fender, bumper, radiator, hood shield panel, brake lines, chassis etc; Perfect replacement for broken or rusty clips; Achieve an effective fixing effect Fitment: Bolts and U nuts for GM is compatible with universal GM Ford Chrysler and Many Other Models with the same size; Directly replace for GM 11503714, 11503716, 1016937, 11503957; 12337917; GM 11503834, 20351035; Ford W520802-S439, W5220822-S426, N623332-S2, N623332-S100; Chrysler 6101308 Bolt and Nut Size: Package includes 10pcs bolts with washer and 10pcs U nut; Bolt size: M6-1.0 x 21mm bolt, Washer Diameter: 17mm; U-clip size: 2.5*1.27 mm Professional Material: Fender bolts is made of carbon steel and the U retainer is made of Mn-steel, enabling them sturdy and durable; Meet or Exceed OEM Specification; Zinc plated surface treatment enhances the aesthetics and prevents rusting Improving Driving Comfort: Fender bumper washer bolts and nuts fix every components firmly in place, No more rattling noises or concerns about things coming loose while cruising down the highway, enhance car's performance on the road GM Ford Chevy Buick Chrysler Cadillac m6 u nuts and bolts Replacement OE GM 11503714/11503716/1016937/11503957/12337917 Ford W520802-S439/W5220822-S426/N623332-S2/N623332-S100 Chrysler 6101308 m6-1.0 21mm extruded u nuts & hex head