Side-by-Side Comparison
Metric Threads (ISO)
M4 Thread vs. M5 Thread
Comparing 2 standards across 7 specifications. 6 key differences identified.
Comparing:
M4 Thread
M5 Thread
M4 is an ISO metric machine screw thread with a nominal major diameter of 4.0 mm and a standard coarse pitch of 0.70 mm. Requiring a 3.30 mm tap drill, it is the mandated standard fastener for VESA MIS-D (75×75 mm and 100×100 mm) computer monitor and small TV wall mounting brackets.
M5 is an ISO metric machine screw thread with a nominal major diameter of 5.0 mm and a standard coarse pitch of 0.80 mm. Requiring a 4.20 mm tap drill, it is the universal standard for bicycle water bottle cages, disc brake rotor mounts, and 2020/4040 aluminum extrusion T-slot framing nuts.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nominal Major Diameter
|
4.00 mm | 5.00 mm |
|
Standard Coarse Pitch
|
0.70 mm | 0.80 mm |
|
Fine Pitch (Optional)
|
0.50 mm | 0.50 mm |
|
Tap Drill Diameter
|
3.30 mm (75% thread engagement) | 4.20 mm (75% thread engagement) |
|
Minor Diameter (Internal)
|
3.242 mm | 4.134 mm |
|
Tensile Stress Area
|
8.78 mm² | 14.2 mm² |
|
Common Drive Size
|
PH2 / PZ2 / 3.0mm Allen / T20 | 4.0mm Allen / T25 / PH2 |