The ARP stainless steel hex stud kit (5/16-24 × 1.750) is a hardware kit described for starter nose and water pump pulley use and includes a 1.750" length hex stud with a .500" fan spacer where noted. The entry specifies stainless-steel construction and the spacer detail, identifying the kit by dimensions and intended pulley/starter-nose application without asserting unrelated claims.
ARP 5/16-24 X 1.750 SS Hex Water Pump Pulley w/ .500in Fan Spacer Stud Kit