头有6种标准规格，根据需要插入不同的头使用，安装和拆卸便捷，使用灵活。装配头的内孔精度为0.003mm，头装配后的精度为0.005，优点是灵活多变，但刚性相对于整体式的较弱，适合多品种少批量加工。
051002 BNI-MT2 BODY 2BNI BODY
051002 BNI-MT2 H POINT 2BNI H POINT
051002 BNI-MT2 K POINT 2BNI K POINT
051002 BNI-MT2 M POINT 2BNI M POINT
051002 BNI-MT2 I POINT 2BNI I POINT
051002 BNI-MT2 J POINT 2BNI J POINT
051002 BNI-MT2 L POINT 2BNI L POINT
051003 BNI-MT3 BODY 3BNI BODY
051003 BNI-MT3 H POINT 3BNI H POINT
051003 BNI-MT3 K POINT 3BNI K POINT
051003 BNI-MT3 M POINT 3BNI M POINT
051003 BNI-MT3 I POINT 3BNI I POINT
051003 BNI-MT3 J POINT 3BNI J POINT
051003 BNI-MT3 L POINT 3BNI L POINT
051004 BNI-MT4 BODY 4BNI BODY
051004 BNI-MT4 H POINT 4BNI H POINT
051004 BNI-MT4 K POINT 4BNI K POINT
051004 BNI-MT4 M POINT 4BNI M POINT
051004 BNI-MT4 I POINT 4BNI I POINT
051004 BNI-MT4 J POINT 4BNI J POINT
051004 BNI-MT4 L POINT 4BNI L POINT
051005 BNI-MT5 BODY 5BNI BODY
051005 BNI-MT5 H POINT 5BNI H POINT
051005 BNI-MT5 K POINT 5BNI K POINT
051005 BNI-MT5 M POINT 5BNI M POINT
051005 BNI-MT5 I POINT 5BNI I POINT
051005 BNI-MT5 J POINT 5BNI J POINT
051005 BNI-MT5 L POINT 5BNI L POINT