Machined from C360 brass or optional C464 Naval brass, Stafford Brass Shaft Collars come in 1- and 2-piece styles with stainless steel fasteners as well as set-screw and hinged styles. These products, offering alternative to 304 and 316 stainless steel products, are designed for secure hold and come in 6 standard sizes from ½–1 ½ in. ID for commercial, industrial, and military applications. Modifications – keyways, square and hex bores, grooves, and other treatments – are available.