本采购规范涵盖了管状开槽弹簧销，该弹簧销由耐腐蚀和中等耐热的马氏体铁基合金制成，该合金的类型在统一编号系统下被识别为UNS S42000，并经过热处理，以允许插入孔中时弯曲。

This procurement specification covers tubular-shaped, slotted spring pins made of a corrosion and moderate heat resistant, martensitic iron base alloy of the type identified under the unified number system as UNS S42000 and heat treated to permit flexure when inserted into a hole.