Screw w/Lock Washer Set (for steel sleeve). The set contains eight screws, includes four lock washers. Since 1857, Klein Tools has manufactured the world's finest hand tools. Screw w/Lock Washer Set (for steel sleeve). The set contains eight screws, includes four lock washers. Since 1857, Klein Tools has manufactured the world's finest hand tools. Constructed of mild steel Zinc plated finish For Climbers 72 and 1976 Screw w/Lock Washer Set (for steel sleeve). The set contains eight screws, includes four lock washers. Since 1857, Klein Tools has manufactured the world's finest hand tools.