Tubular Rivet, Truss Head, 1/8 in Dia., 3/8 in L, Steel Body, 48 PK, Midwest Fastener, Mfr#: 61866

Tubular rivets are similar to solid rivets, but they have a hole at the tip. The purpose of this hole is to reduce the amount of force needed for application by rolling the tubular portion outward.