本规范规定了螺纹尺寸为0.7500至1.5000英寸的自锁扳手螺母的要求。螺母由耐腐蚀和耐热的可沉淀硬化铁基合金制成，该合金的类型在统一编号系统下被识别为UNS S66286，在室温下具有160000 psi的轴向拉伸强度，零件的最高调节温度为800°F。

This specification establishes the requirements for self-locking wrenchable nuts with thread sizes 0.7500 thru 1.5000 inches.The nuts are made of corrosion and heat resistant precipitation hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286 and of 160,000 psi axial tensile strength at room temperature, with maximum conditioning temperature of parts at 800 °F.