HLB-22 HEICO Fastening Systems HEICO-LOCK Washers , Manufacturer Part#: HLB-22 , Manufacturer: HEICO Fastening Systems , Brand: HEICO-LOCK Washers , UOM (Inch or Metric): Metric , Material: Steel , Finish: Zinc-Flake Coated , Bolt Size: 7/8 Inch UNC (M22) , Inside Diameter: 0.920 Inch (23.40mm) , Outside Diameter: 1.650 Inch (42.00mm)