This is a Hardware kit that we put together for a 1988-1998 Chevy GMC light truck 4X4 and after 1991 Suburban Blazer and Jimmy 4x4.  This was used with both the Unimount 62330 Model 1585.

With this you are getting the bolts needed to fasten the mount to the truck frame.

6   3/8x16x1" bolts,

8    1/2x1-1/2,    2    5/8x 1.5,     2    5/8x1-3/4

2  3/8 lock nuts   12  1/2" lock nuts   10   5/8" lock nuts   M14x2x45

2   3/8 plain washers    6 1/2" plin washers

Here is a link to the Parts list and Installation Instructions for the Unimount # 62330