523C Rear crash bar mounting bolts for 1937–1957 rigid frames – 9/16"-18 x 1-3/4" (sold in pairs) OEM 4975
523D Rear stand mounting bolts for 1939–1957 rigid frames (sold in pairs) OEM 49570-38
523A Frame to fender mounting bolts for 1930–1957 rigid frames – 7/16"-20 x 1" (sold in pairs) OEM 4634
523B Hinged fender mounting bolts for 1930–1957 rigid frames – 5/16"-24 x 3/4 (sold in pairs) OEM 5425
523E Universal nuts and bolts – 1/4"-20 x 1/2" (sold in pairs)