M4 M5 Hex CSK Socket Flat Countersunk Head Screw A2 304 Stainless Steel Screw Bolt | Shopee Malaysia
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![measuring - Does the outer diameter of 4.78 indicate an M4 or an M5 bolt? - Home Improvement Stack Exchange measuring - Does the outer diameter of 4.78 indicate an M4 or an M5 bolt? - Home Improvement Stack Exchange](https://i.stack.imgur.com/04pP0.png)