I have four bolts from Kawai, listed as number 6. The thread is 1.75mm (~6 per cm) Diameter below the quad head is 10.75 mm Diameter of thread is 11.76 mm Diameter of thread at depth is 9.95 mm Overall length is 76.8 mm Get a digital caliper to more accurately measure your remaining bolts. If these will fit let me know. Newton
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