The golden standard of skate truck bolts - PHILLIPS head and they are black. You can't go wrong with these!!!

#10-32 UNF thread! - in case you care about the specifics.

INDY official description:

"Independent Genuine Parts hardware is specified to the highest standards.

Each set contains 8 bolts. Genuine Parts Phillips hardware features cross logo heads, full-size nylon lock nuts, full-size bolt heads with Cross insignia, and extended unthreaded shafts for minimal board damage.

Phillips Head available in 7/8", 1", 1.25" and 1.5". "