Micro Hex Allen Key Wrench — Steel Hexagon Socket Screwdriver 0.7–6mm

These micro hex Allen key wrenches cover the full range of small hexagon socket screw sizes from 0.7mm to 6mm, filling the gap left by standard Allen key sets that typically start at 1.5mm or 2mm. Made from hardened carbon steel, they provide the torque and precision needed for M1, M1.2, M1.4, M1.6, M2, M2.5, M3, and M4 hex socket screws found in electronics, RC models, optical instruments, and precision machinery.

Key Specifications

Parameter	Value
Sizes Available	0.7mm / 0.9mm / 1.0mm / 1.2mm / 1.3mm / 1.5mm / 2.0mm / 2.5mm / 3.0mm / 4.0mm / 5.0mm / 6.0mm
Material	Carbon steel (hardened)
Drive Type	Hexagon socket (Allen / Hex)
Compatible Screws	M1 – M4 hex socket cap screws (ISO 4762 / DIN 912)
Form Factor	L-shaped hex key
Origin	CN

Why Micro Hex Keys?

Sub-2mm sizes — 0.7mm, 0.9mm, and 1.0mm keys are essential for M1–M1.4 screws in electronics, eyeglass frames, and watch cases that standard sets cannot reach
Hardened carbon steel — Resists rounding and deformation even on tight, corroded, or thread-locked screws
L-shape design — Short arm for high torque in confined spaces; long arm for fast spinning in open areas
Individual sizes available — Buy only the size you need rather than a full set

Typical Applications

Electronics assembly and repair (PCB standoffs, connector screws)
RC car, drone, and model aircraft hex socket screws
Eyeglass frame and optical instrument adjustment screws
Watch case back and movement screws (0.7–1.2mm)
3D printer frame and hotend assembly (M2–M4)
Bicycle derailleur and brake adjustment screws

Frequently Asked Questions

Q: What is the difference between a hex key and a Torx key?

A hex (Allen) key has a 6-sided flat profile and fits hex socket screws. A Torx key has a 6-pointed star profile and fits Torx screws. They are not interchangeable. Check your screw head type before selecting a driver.