6 Stud Welding Studs and Pins; Metal Fasteners and Parts Thereof-Namely, Self-Locking Insulation Washers, and Speed Washers; Collets, Collet Inserts and Collet Stops and Protectors; Chucks; and Face Plates, Legs, Feet, Spark Shields, Ferrules and Ferrule Grips for Welding Gun Tripods, All Made Primarily of Metal