General-purpose blank top jaws. Standard steel material can be case hardened after machining, or left soft. Optional aluminum material reduces surface marring, ideal for chucking on finished surfaces. Choice of standard height or extra high.

For thinwall parts	For non-cylindrical parts

Full-grip jaws for increased surface contact on large-diameter or thinwall parts, to prevent distortion and marring. Also ideal for fixturing non-cylindrical parts. Choice of standard height or extra high. Cast aluminum material is standard, with steel or cast iron available as an option. Steel jaws can be case hardened after machining, or left soft.

Most-common hard top jaws with two steps on which to rest parts. Also reversible for through-feeding barstock. Jaws have diamond-point gripping serrations whenever possible.

Available for some chucks. Similiar to the hard jaws at left, but with only one locating step.

Non-reversible hard jaws made for some high-speed chucks.