本采购规范涵盖飞机质量自锁螺母，用于扳手（六角、花键）和锚（板、槽、柄）类型的螺母，这些螺母由耐腐蚀和耐热的镍基合金制成，其类型在统一编号系统UNS N07001中确定。螺纹部分总长度不小于标称螺纹直径1.2倍的拉伸高度螺母在室温下具有1210 MPa的最小拉伸强度。具有较短螺纹部分的剪切高度螺母在室温下具有1100 MPa的最小拉伸强度。 零件的最高试验温度为730°C。

This procurement specification covers aircraft quality self-locking nuts for wrenching (hex, spline) and anchor (plate, gang channel, shank) types of nuts made from a corrosion and heat-resistant nickel-base alloy of the type identified under the Unified Numbering System as UNS N07001. Tension height nuts having overall length of threaded portion not less than 1.2 times the nominal thread diameter have 1210 MPa minimum tensile strength at room temperature. Shear height nuts having shorter threaded portion have 1100 MPa minimum tensile strength at room temperature. Maximum test temperature of parts is 730 °C.