Miniature Straight Shank Drill Bit | HSS | AMSUO Industrial Tools

Miniature Straight Shank Drill Bit — HSS, 0.3–3.2 mm Precision Micro-Drilling

High-precision micro-holes for PCB, jewelry and medical instruments. Precision-machined miniature drills from 0.3 mm to 3.2 mm with 3.2/2.35 mm handle diameters deliver consistent concentricity at high rotational speeds — the dependable choice for professionals and serious hobbyists. Factory-direct from a 20-year precision-tools manufacturer with ISO 9001 / 14001 / 45001 triple-system certification.

Product Description

This 0.3–3.2 mm miniature straight shank drill bit is designed for industrial-grade PCB, jewelry and medical instrument work. Precision machining with a 3.2/2.35 mm handle diameter delivers high rotational concentricity.

Specifications

Key Features

• High-precision micro-hole drilling
• Consistent concentricity at high speeds
• Ideal for hobbyists and professionals

Recommended Applications

• PCB and electronics board drilling
• Jewelry and fine-metal work
• Medical instrument manufacturing

Quality & Certification

Produced in an ISO 9001 / 14001 / 45001 triple-certified facility — every drill is inspected before packing.

FAQ

What handle diameters are available?

The bits come with 3.2 mm and 2.35 mm shanks — confirm which fits your chuck or collet before ordering.

Can these be used for PCB work?

Yes — the consistent concentricity and micro sizes from 0.3 mm up are made for precision board drilling.

Can these drills be private-labeled?

Yes — custom branding, packaging and bulk size-assortment programs are available.

Get a Quotation

Email [email protected] or message us on WhatsApp for wholesale pricing, samples and lead times.