China Trapezoidal Thread Acme Rod Leadscrew with Hex Nuts Tr30X6 Standard hexagon socket head, smooth and flat, with flange thread texture, stable structure, easy to install., 3., Anti-slip design: Our product is a standard internal hexagon socket type, burr-free and anti-slip design, will not scratch your hands when applicable., 4., Use high-quality, ultra-high-hardness transparent plastic box to protect trapezoidal nuts., 5., Wide application: It is suitable for soft wood such as pine, plywood, fiberboard, etc. Woodworking Nuts Yakaoz Trapezoidal Nut,130Pcs Hex Head Barbed Trapezoidal Nuts Metal Fasteners Kit Description: Yakamoz Trapezoidal Nut,130Pcs Hex Head Barbed Trapezoidal Nuts Internal and External Thread T-Shaped Feature: 1., The nut surface is smooth without burr, good workmanship, rugged and durable., 2., The thread is deep, the force is even and the tooth is not removed., 3., Choose zinc alloy material for wear and rust resistance and high hardness., 4., With inner and outer hexagon, the trapezoid structure is more stable., 5., Compared with the rectangular thread, the transmission efficiency is slightly lower, but the process is good, the tooth root strength is high, good to neutral. Steel Hex Nut with Trapezoidal Thread Accordance with DIN 103 - China... Yakaoz Trapezoidal Nut,130Pcs Hex Head Barbed Trapezoidal Nuts... Trapezoidal thread is the most commonly used drive thread. If use section nut, still can adjust clearance.