1"-5 RH ACME Threaded Shaft Collar, One-Piece Split Clamp, SteelSpecifications 10L100 UPC Code: 662786013164 Total Width (in.): 0. 625 Series: Signature Weight (lb.): 0. 53 Material: Steel Finish: BLACK OXIDE Screw Size: 5 16 24 x 1 Screw Type: SHCS Outside Diameter (in.): 1. 500 ACME Threaded Collars are used on standard ACME threaded shafts, either left or right hand thread). They are perfect for applications such as stroke limiting, stops, and height and spring tensioning. They are precision machined, non