e filettatura vite metrica bullone dado scacchi fori pollici calibro 28^ ╏
Gage Type Thread Gage. 1 x Nut and Bolt Thread Checker 28Holes. Type Nut and Bolt Thread Checker. For Identify 28 Different Size Bolt, Nut, Screw Threads. Machined to high accuracy to ensure each bolt and thread conforms to standard gauge.