DIAMOND BLACK

hard substance coating containing boron and carbon, sold as a component of metal goods; namely, molds and machined metal shapes

hard substance coating containing boron and carbon, sold as a component of power-operated machine tools, tool attachments, and engine parts; namely, taps, reamers, gears, broaches, drills, dies, punches, spindles, shapers, screws, injection nozzles, slide plates, ejector pins, core pins, heat seal bars, score knives, saws, slitter blades, razor blades, and other cutting tools, pistons, bearings, crankshafts, camshafts, wrist pins, fuel injectors, bearing journals, carbide inserts, valves, and molds

hard substance coating containing boron and carbon sold as a component of hunting knives

hard substance coating containing boron and carbon, sold as a component of gauges

hard substance coating containing boron and carbon, sold as a component of medical instruments; namely, [ chisels, ] drills, [ dental burrs, ] routers, (( arthroscopes, )) [ forceps, ] (( scalpels)) [ , clamps, and hip prostheses ]

hard substance coating containing boron and carbon sold as a component of wear surfaces of land , air, and water vehicles; namely, reciprocating and rotating wear surfaces; namely, pistons, bearings, crankshafts, camshafts, wrist pins, fuel injectors, and bearing journals

hard substance coating containing boron and carbon, sold as a component of firearms; namely, pistols, [ rifles, ] automatic guns, automatic pistols, automatic revolvers [ , and automatic rifles ]

(( hard substance coating containing boron and carbon, sold as a component of hunting arrowheads and guides for fishing rods ))

application of protective hard substance coating containing boron and carbon to metal surfaces of tools, molds, and wear parts