The safety shear pins consist of three Grade 5 (70 ksi shear strength) 3/16 inch diameter machine screws which connect at a threaded aluminum coupler.

• 安全剪切销构成三五年级（ 70 ksi抗剪强度） 3 / 16英寸直径机螺钉连接在一个线程铝耦合。This is illustrated in Figure 5.；这是说明了在图5 。