# item.guide
Side-by-Side Comparison Metric Threads (ISO)

M1.6 Thread vs. M6 Thread

Comparing 2 standards across 8 specifications. 8 key differences identified.

Comparing:
M1.6 Thread
M6 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.

View full M1.6 Thread spec sheet →

M6 is an ISO metric machine screw thread with a nominal major diameter of 6.0 mm and a standard coarse pitch of 1.00 mm. Requiring a 5.00 mm tap drill, it is the global standard for EIA-310 19-inch datacenter server rack cage nuts, the smallest VESA MIS-F 200×200 mm TV mounts, and automotive body panels.

View full M6 Thread spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
Nominal Major Diameter
1.60 mm 6.00 mm
Standard Coarse Pitch
0.35 mm 1.00 mm
Fine Pitch (Optional)
0.20 mm 0.75 mm
Tap Drill Diameter
1.25 mm (75% thread engagement) 5.00 mm (75% thread engagement)
Minor Diameter (Internal)
1.221 mm 4.917 mm
Tensile Stress Area
1.27 mm² 20.1 mm²
Thread Profile Angle
60 degrees
Common Drive Size
10mm Hex / 5.0mm Allen / T30