This listing is for (4) Stainless Steel Screws to fit some:
Thread: 5/16" (5/16-18)
Thread Length: 2"
Total Length Head: 2-1/8"
Head Diameter: 1/2"
Seat Type: Flat Seat with Button Head
Finish: Stainless Steel
Installation: Installs from front of wheel
Interchange Part Number: STAINLESS STEEL BUTTON HEAD REPLACEMENT BOLTS,FITS 601-5600-1 601-5600
Manufacturer Part Number: SS-5/16