(50) 5/16-18x1 Grade 8 Flange Grain Bin Steel Building Bolts Zinc with Rubber Washers$$Hardware

Diameter/Pitch: 5/16-18" Length Under Head: 1" Threads: Coarse, Full Thread Wrench Size: 1/2" Material: Grade 8 | Finish: Zinc Clear Washer Material: EPDM Rubber