This 10mm full nut has a 1.5mm thread pitch and a 17mm head.  It can be used for various applications including:

• T1 lower engine mounting stud nut
• T1 pinch bolt nut (N0104457)
• T1 66-79 shock absorber top mount nut (113413031E)
• T2 1600cc-2000cc lower engine mounting stud nut
• T2 72-79 gearbox mount yoke clamp nut
• T2 68-79 bottom shock mount nut
• T2 68-79 anti roll bar mount nut
• T2 68-79 (RHD) end of accelerator pedal shaft nut
• T2 -67 engine mounting nut
• T2 -67 lower shock mount nut
• T25 1600cc (CU) lower engine mounting nut