Toprecision — Precision Fastening & Connection Solutions

An M1 screw's head is 0.3 mm thick — thinner than a human hair is wide is almost true. Manufacturing at this scale is a different craft with different equipment.

Bottom line: for most Precision Screws applications the decision comes down to load, environment and assembly method — the Precision Screws guide walks through the selection.

How micro screws are made

Micro heading forms blanks from fine wire at speeds conventional machines cannot touch; the dies themselves are precision artifacts. Threads roll at sizes where a hair's-width error is a pitch. Every handling step — heat treatment, coating, packaging — risks tangles and damage, so vibratory and tape-based handling replaces human hands early.

Tolerances that matter at M1

• Head height ±0.03 mm and slot/hex depth dominate drive reliability — a shallow hex strips in torque.
• Concentricity between head and shank decides whether the screw seats without wobble in optical assemblies.
• Coating thickness must shrink with the part: 5 µm plating on M1 changes thread fit by a visible margin.

Where they serve

Watches, camera modules, hearing aids, micro drones and surgical instruments. Topprecision manufactures sub-M2 precision screws with 100% optical inspection, PVD and ultra-thin coating options, and tape packaging compatible with automated micro-assembly cells.

Key specifications at a glance

Need micro fasteners below M2?

Toprecision manufactures M0.6–M2 precision screws for AI hardware, consumer electronics and medical devices, with automated optical inspection. Send the thread size and head style — we will supply the micro fastener sample. Request micro fastener support.