Thumb Screw, Product Type Thumb Screw, Compatible with Manufacturer Model Number B-250PF, B-300PF, B-500PF, B-700PF, B-800PF, B-900PF, Compatible with Grainger Part Number 31XC14, 31XC16, 31XC18, 31XC20, 31XC22, For Use With Storage Bin