Jeep Wrangler YJ 87-95 Vertical Rear Bumper to Frame Bolts GRADE 8Pair of Grade 8 hardened yellow zinc plated flange bolts to attach the rear bumper to the underside of the frame rail on 1987 1995 Jeep Wrangler YJ. (These bolts are #5 in the second picture)

The bolts are Grade 8 hardened and black zinc plated T-55 Torx bolts with a thread cutting tip

2018-2025 Jeep Wrangler JL

which is most likely the case if your original nutserts are spinning

Set of (4) Class 10

All of this led to a loose fit which causes play in the suspension and eventually death wobble

Includes the front and rear upper and lower shock bolts for all 1999-2004 Jeep Grand Cherokee WJ's

Includes 8 bolts

9 Class (metric equivalent to Grade 8) hardened and yellow zinc plated

this is what you need

1991-2004 Wrangler YJ TJ LJ

9 Class (metric equivalent to Grade 8) hardened black flange bolts to attach the water pump to the engine block and (4) 10

YJ's use 4 TJ's use 6