Side-by-Side Comparison
Metric Threads (ISO)
M1.6 Thread vs. M8 Thread
Comparing 2 standards across 8 specifications. 8 key differences identified.
Comparing:
M1.6 Thread
M8 Thread
M1.6 is a miniature ISO metric machine screw thread with a nominal major diameter of 1.6 mm and a standard coarse pitch of 0.35 mm. Requiring a 1.25 mm tap drill, it is the standard fastening thread for precision optical equipment, wristwatches, and micro-electronic assemblies.
M8 is an ISO metric machine screw thread with a nominal major diameter of 8.0 mm and a standard coarse pitch of 1.25 mm. Requiring a 6.80 mm tap drill, it is the standard fastener for VESA MIS-F large TV wall mounts (400×400 mm and 600×400 mm), automotive suspension brackets, and heavy furniture.
Specification Comparison Table
8 Parameters| Parameter / Spec | ||
|---|---|---|
|
Nominal Major Diameter
|
1.60 mm | 8.00 mm |
|
Standard Coarse Pitch
|
0.35 mm | 1.25 mm |
|
Fine Pitch (Optional)
|
0.20 mm | 1.00 / 0.75 mm |
|
Tap Drill Diameter
|
1.25 mm (75% thread engagement) | 6.80 mm (75% thread engagement) |
|
Minor Diameter (Internal)
|
1.221 mm | 6.647 mm |
|
Tensile Stress Area
|
1.27 mm² | 36.6 mm² |
|
Thread Profile Angle
|
60 degrees | — |
|
Common Drive Size
|
— | 13mm Hex / 6.0mm Allen / T40 / T45 |