Hardware Resources 8X112017WCH - #8 x 1-1/2" Standard Round Washer Combo Type 17 with 2/3 Thread Finish: Zinc Sold by Keg Bucket8 x 1 1 2" Zinc Plated Square Phillips Drive Type 17 Coarse Thread Standard Round Washer Head Screw Sold by the Keg (5,500). Order 5. 5 for a keg of 5,500 screws Part # 8X112017WCH Description Round washer head combines advantages of the pan head design with an integrated washer head which prevents over driving into soft woods and allows for maximum torque. Great for cabinet assembly, cabinet installation, and various hardware installations