Side-by-Side Comparison
Metric Threads (ISO)
M10 Thread vs. M3 Thread
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
M10 Thread
M3 Thread
M10 is an ISO metric machine screw thread with a nominal major diameter of 10.0 mm and a standard coarse pitch of 1.50 mm. Requiring an 8.50 mm tap drill, it is standard in automotive engine mounts, suspension control arms, motorcycle rear-view mirrors, and commercial HVAC hanging brackets.
M3 is an ISO metric machine screw thread with a nominal major diameter of 3.0 mm and a standard coarse pitch of 0.50 mm. Requiring a 2.50 mm tap drill, it is the world's most widely deployed fastener in 3D printers, consumer electronics, and PC 5.25-inch optical drive bays.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nominal Major Diameter
|
10.00 mm | 3.00 mm |
|
Standard Coarse Pitch
|
1.50 mm | 0.50 mm |
|
Minor Diameter (Internal)
|
8.376 mm | 2.459 mm |
|
Tensile Stress Area
|
58.0 mm² | 5.03 mm² |
|
Common Drive Size
|
17mm (ISO) / 16mm (DIN) / 15mm / 8.0mm Allen | PH1 / PH2 / 2.5mm Allen / T10 |
|
Fine Pitch (Automotive Standard)
|
1.25 / 1.00 mm | — |
|
Tap Drill Diameter (Coarse)
|
8.50 mm (75% thread engagement) | — |
|
Fine Pitch (Optional)
|
— | 0.35 mm |
|
Tap Drill Diameter
|
— | 2.50 mm (75% thread engagement) |