Clamping, workholding, and positioning products hold workpieces in place and adjust components in woodworking, machining, and production operations. Manual toggle and hold-down clamps are hand-operated clamps that secure and position workpieces. Air-powered swing and toggle clamps install on a fixture or table and connect to a compressed air source to secure workpieces when parts are regularly clamped in the same position. Machine table clamps secure workpieces to holes and slots in worktables. Fixture clamps have a low-profile clamp block that presses onto the end of a workpiece. Machine vises hold workpieces secure during cutting, drilling, assembly, and other tasks. T-slot nuts and bolts slide freely along T-slot fixtures to connect clamps, stops, and other fasteners for quick setup and repeatable machining. Indexing and positioning equipment install on fixtures, tables, and equipment to quickly align, locate, and position parts in production environments. Lathe centers, chucks, and jaws center and support workpieces between the headstock and tailstock to provide accurate, concentric milling. Stationary fixturing secure parts and workpieces for high-precision machining of stationary parts.