THREAD: AS8879 MATERIAL: Carbon or alloy steel, heat treated. FINISH: Cadmium plate to fed. spec. AMS-QQ-P-416, Type I, Class 2, plus Kaylube molybdenum disulfide dry lubricant coated per AS5272 Type I. PROCUREMENT SPEC: NASM25027. TEMPERATURE: 450°F. APPLICATION: For use with materials such as aluminium alloys, brass, copper and mild steel. MK7200 is designed to be interchangeable with K7000 type clinch nuts. INSTALLATION DATA: Use Kaylock tool number KT7201 or KT7203.