External Tooth Lock Washer, For Screw Size 5/16 in Steel, Zinc Plated Finish, 100 PK, EnjoyTool Select, Mfr#: U37500.031.0001

Lock Washer, Lock Washer Type Countersunk External Tooth Lock, Finish Zinc Plated, Material Steel, For Screw Size 5/16 in, Inside Diameter 0.318 in, Outside Diameter 0.599 in, Maximum Thickness 0.023 in, Dimensional Standards ASME B18.21.1, Material Grade/Class Not Graded, Pack Size Small Pack, Rockwell Hardness C40 to C50, System of Measurement Inch, Package Quantity 100