Some hints that may be helpful to you!
1. OS Muffler Screws - - 40-FP uses M3x30, 46-FX uses M3x35, 60-FP 65-LA & 61-SF use M4x40, 91-FSR 108-FSR BX1 use M4x15 (2) M4x18 (2) & M3.5x12 (1).
2. Thunder Tiger Muffler Screws - - GP-07 uses M2.5x24, Pro-61 uses M4x40
3. SuperTigre Muffler Screws - - .20-.23 uses bolt & nut M4x50 and M4 nut, S75 uses M3x35
4. Enya Muffler Screws - - - 40-SS & 45-CX uses M3x30, 60-X uses M4x14
5. Here are some prop nut sizes - - OS 10FP - M5, OS60FP & 61SF-5/16x24, Ryan OS Max Special- 1/4x28
