McMaster 97135A250 High Strength Steel Nylon Insert Locknut, Pack of 10, Grade 8, Zinc Yellow Chromate Plated, 1 2" 13 Thread G5205742 Angle Broom Bristle Material Pantone Angle Broom Bristle Material Pantone Sweep Face 7 Bristle Length 5 in Bristle Color Blue Handle Length 46 in Handle Material Metal Handle Color Blue Chemical Resistant No Features Handle Has Hole For Hanging Acid Resistant No Color Coding System No 000 psi Resistance Properties Combination Attribute Lubricating Brush Top Can Chemical Base PTFE Maximum Viscosity 170 The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads the insert may become brittle if exposed to high temperatures